Deployment Guide Sc8000

8/18/2019 Deployment Guide Sc8000

http://slidepdf.com/reader/full/deployment-guide-sc8000 1/218

Dell Compellent Storage Center™

SC8000 Controller

Deployment Guide



Storage Center SC8000 Controller Deployment GuideDocument Number: 680‐087‐001

Notes, Cautions, and Warnings

Copyright Notice and Trademarks© 2014 Dell Inc.

Trademarks used in this text: Dell™, the Dell logo, and Compellent™ are trademarks of Dell Inc.

Contacting Dell Technical Support ServicesFor technical support, go to support.dell.com/compellent/ .

Revision Date Description

A July 2013 Initial release

B August 2013 Changed SSN # set up to reflect previous method, added recommended Ethernet speed, updated number of back‐end chains supported, removed references to

direct‐connect FC front‐end connection.

C December 2013 Changed number of supported chains.

D May 2014 Revise software startup procedure for SecureData and SEDs implemented in

version 6.5 software.

Note: Indicates important information that helps you complete a procedure.

Caution: Indicates either potential damage to hardware or loss of data and tells you how to avoid

the problem.

Warning: Indicates that failure to follow directions could result in property damage, personal injury, or death.

http://support.dell.com/compellent

http://support.dell.com/compellent



Dell Compellent iii

Contents

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Storage Center Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Storage Center Architecture Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Communication Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Front End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Back End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

System Administration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

SC8000 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

SC8000 Front-Panel Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

SC8000 Back-Panel Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

SC280 SAS Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12SC280 Enclosure Front Panel Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

SC280 Drawer Front-Panel Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

SC280 Back-Panel Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

SC280 EMM Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

SC280 Power Supply Unit Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Fan Module Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

SC280 Enterprise Plus Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

SC280 Drive Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

SC200/220 SAS Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

SC200/220 Front-Panel Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

SC200/220 Back-Panel Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

SC200/220 EMM Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

SC200/220 Enterprise Plus Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

SC200/220 Drive Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25



iv Storage Center SC8000 Controller Deployment Guide

Contents

EN-SASx6x12/24 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

EN-SASx6x12/24 Front-Panel Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

EN-SASx6x12/24 Back-Panel Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

EN-SASx6x12/24 SBB Module Features and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

EN-SASx6x12/24 Standard SAS Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29EN-SASx6x12/24 Drive Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

2 Install the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Prepare for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Unpack and Inventory the Storage Center Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Prepare the Installation Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Gather Required Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Electrical Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

General Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Electrostatic Discharge Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Install IO Cards the Controller(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Open the Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Install IO Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Close the Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Label the Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Mount the Hardware in a Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 452U and 3U Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

5U Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Install Drives in SC280 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Installing Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Install Drives in EN-SASx6x12/24 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Installing 3.5" Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Installing 2.5" Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Install Enterprise Plus Drives in SC200/220 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

3 Connect the Back End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

SAS Enclosure Cabling Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

SAS Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

SC8000 SAS Port Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56



Dell Compellent v

Contents

Connect IPC for Dual-Controller Storage Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Connect the Controllers with Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Connect the Controllers with SAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Connect SC200/SC220 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Single Controller, Single Enclosure, Low Profile SAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61Single Controller, Single Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Single Controller, Four Enclosures, Single Chain, Low Profile SAS . . . . . . . . . . . . . . . . . . 63

Single Controller, Four Enclosures, Single Chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Single Controller, Four Enclosures, Two IO Cards, Two Chains, Low Profile SAS . . . . . . 65

Single Controller, Four Enclosures, Two IO Cards, Two Chains . . . . . . . . . . . . . . . . . . . . . . 66

Dual Controllers, One Enclosure, Single Chain, Low Profile SAS . . . . . . . . . . . . . . . . . . . . 67

Dual Controllers, One Enclosure, Single Chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Dual Controllers, Two Enclosures, Single Chain, Low Profile SAS . . . . . . . . . . . . . . . . . . . 69

Dual Controllers, Two Enclosures, Single Chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Dual Controllers, Four Enclosures, Two Chains, Low Profile SAS . . . . . . . . . . . . . . . . . . . . 71

Dual Controllers, Four Enclosures, Two Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Dual Controllers, Eight Enclosures, Two Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Connect SC280 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Single Controller, Single SC280 Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Single Controller, Two SC280 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Dual Controller, Single SC280 Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Dual Controller, Two SC280 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79Dual Controllers, Two SC280 and Two SC200/SC220 Enclosures, Two Chains . . . . . . . . . 81

Connect EN-SASx6x12/24 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Single Controller, Single Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Single Controller, Four Enclosures, Single Chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Single Controller, Four Enclosures, Two IO Cards, Two Chains . . . . . . . . . . . . . . . . . . . . . . 87

Dual Controllers, Two Enclosures, Single Chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Dual Controllers, Four Enclosures, Single Chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Label the Back-End Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

4 Connect the Front End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Types of Redundancy for Front-End Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Multipath IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

MPIO Behavior for Dual-Controller Storage Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

MPIO Configuration Instructions for Servers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96



vi Storage Center SC8000 Controller Deployment Guide

Contents

Front-End Connectivity Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Virtual Port Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Legacy Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Failover Behavior for Legacy Mode and Virtual Port Mode . . . . . . . . . . . . . . . . . . . . . . . . . 101

Fibre Channel Zoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102WWN Zoning Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Port Zoning Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Connect the Front End for a Single-Controller Storage Center . . . . . . . . . . . . . . . . . . . . . . . . . 103

Connect Servers to a Single Controller with No Redundancy . . . . . . . . . . . . . . . . . . . . . . . 103

Connect Servers to a Single Controller with Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Connect the Front End for a Dual-Controller Storage Center . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Connect Fibre Channel Servers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Connect iSCSI Servers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Label the Front-End Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

5 Set up the Storage Center Software . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Required Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Required Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Required Software Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Connect the Ethernet Management and iDRAC Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121Connect Single-Controller Management Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Connect Dual-Controller Management Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Label the Management Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Turn on the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Configure the Controller(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Reset Hardware and System Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Set Controller IP Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Manage the iDRAC IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Verify Software Support for Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Start the Storage Center Startup Wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Complete the Startup Wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

License Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Load the License File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Create a Disk Folder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132



Dell Compellent vii

Contents

Add a Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Set the Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Set the System IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Configure a Key Management Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Configure SMTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142Select Update Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Set Admin Account . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Configure IO Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Configure Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Generate SSL Certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

Label SC200 and SC220 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

6 Perform Post-Setup Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Verify Connectivity and Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Create Test Volumes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Test Connectivity and Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Clean up Test Volumes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

Change Administrative Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

Configure a Phone Home Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Phone Home . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Check for Storage Center Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Next Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

A Adding or Removing an Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Adding SC280 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Adding an SC280 Enclosure in a New Chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Adding to an Existing SC280 Enclosure Chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Adding SC200/220 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Creating a New Chain of SC200/220 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Adding to an Existing SAS Enclosure Chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186Adding a Second SAS Enclosure, Second Chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Removing Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Release Disks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Remove an SC280 Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Remove an SC200/SC220 Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199



viii Storage Center SC8000 Controller Deployment Guide

Contents

B Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Troubleshooting the Serial Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Troubleshooting Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Troubleshooting Licenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Troubleshooting Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206



Dell Compellent ix

Preface

The preface introduces you to the Storage Center documentation. It provides the purpose and audience of this document as well as a list of related publications.

PurposeThe Storage Center SC8000

Controller

Deployment

Guide provides cabling instructions for Storage Center

controllers, switches, and enclosures and provides instructions for configuring a new Dell Compellent Storage Center using the System Manager Startup wizard.

AudienceTarget audiences for this document are Dell installers and Dell business partners. The intended reader has

a working knowledge of storage concepts.

Related PublicationsThe following documents comprise the core Storage Center documentation set:

Storage

Center

Release

Notes

Contains information about features and open and resolved issues for a particular product version.

Storage

Center

System

Manager

Administrator’s

Guide

Describes the Storage Center System Manager software that manages an individual Storage Center.

Storage

Center

Software

Update

Guide

Describes how to upgrade Storage Center software from an earlier version to the current version.

Storage

Center

Maintenance

CD

Instructions

Describes how to install Storage Center software on Storage Center controllers. Installing Storage Center software using the Storage Center Maintenance CD is intended for use only by sites that cannot update

Storage Center using the standard update options available through the Storage Center System

Manager.

Storage

Center

Command

Utility

Reference

GuideProvides instructions for using the Storage Center Command Utility. The Command Utility provides a

command‐line interface (CLI) to enable management of Storage Center functionality on Windows, Linux, Solaris, and AIX platforms.

Storage

Center

Command

Set

for

Windows

PowerShell

Provides instructions for getting started with Windows PowerShell cmdlets and scripting objects that interact with the Storage Center via the PowerShell interactive shell, scripts, and PowerShell hosting

applications. Help for individual cmdlets is available online.



x Storage Center SC8000 Controller Deployment Guide

Dell

TechCenter

Provides technical white papers, best practice guides, and frequently asked questions about Dell Storage products. Go to: http://en.community.dell.com/techcenter/storage/ and select Dell Compellent in the Table of Contents.

http://en.community.dell.com/techcenter/storage/

http://en.community.dell.com/techcenter/storage/



Dell Compellent 1

1 Introduction

The Storage Center SC8000

Controller

Deployment

Guide describes how to install and

configure Dell Compellent Storage Center. The information provided in this Deployment Guide is intended to be used by Dell installers and Dell business partners.

ContentsStorage Center Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Storage Center Architecture Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Communication Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SC8000 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

SC280 SAS Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

SC200/220 SAS Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

EN‐SASx6x12/24 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26



Chapter 1 Introduction

2 Storage Center SC8000 Controller Deployment Guide

Storage Center Hardware ComponentsA Dell Compellent Storage Center consists of one or two controllers, switches, and one or more enclosures.

ControllersA Storage Center controller provides the central processing capability for the Storage

Center Operating System (OS), application software (Storage Center System Manager), and

managing RAID storage. A Storage Center can be configured with a single controller (single‐controller Storage Center) or a pair of controllers (dual‐controller Storage Center). In a dual‐controller Storage Center configuration, the pair of controllers must be the same

controller model.

IO cards in the controller provide communication with drive enclosures and servers that use the storage. Controllers provide two types of IO ports:

Front‐end ports: Hosts, servers, or Network Attached Storage (NAS) appliances access storage by connecting to controller Fibre Channel IO cards, FCoE IO cards, or iSCSI IO

cards through one or more Fibre Channel or Ethernet network switches. Ports for these

connections are located on the back of the controller, but are designated as front‐end

ports.

Back‐end ports: Enclosures, which hold the physical drives that provide back‐end

storage, connect directly to the controller. Fibre Channel and SAS transports are

supported through ports designated as back‐end ports. Back‐end ports are in their own

private network between the controllers and the drive enclosures.

SwitchesDell Compellent offers Fibre Channel (FC) and iSCSI switches and IO cards as part of the

total Storage Center product package. Switches provide robust connectivity to servers, allowing for the use of multiple controllers and redundant transport paths. Cabling

between the controller IO cards and switches (and servers) is referred to as front‐end

connectivity.

EnclosuresEnclosures house and control drives that provide storage. Enclosures are connected

directly to controller IO cards. These connections are referred to as back‐end connectivity.

New Storage Center deployments use 6 GB Serial Attached SCSI (SAS) disk enclosures.

Fibre Channel Switched Bunch of Disks (SBOD) and Serial Advanced Technology

Attachment (SATA) enclosures are supported for existing Storage Centers and for controller migrations only (for example, upgrading an existing Storage Center by

migrating from a CT‐SC040 controller to an SC8000 controller).



Storage Center Architecture Options

Dell Compellent 3

Storage Center Architecture OptionsThe Dell Compellent Storage Center can be deployed in a variety of configurations:

Single Controller, Single Enclosure

Single Controller, Multiple Enclosures

Dual Controller, Single Enclosure

Dual Controller, Multiple Enclosures

Figure 1. Storage Center Architectures

Additionally, Storage Center sites can be co‐located or remotely connected and continue to

share and replicate data between sites. Replication is used to duplicate volume data to support a Disaster Recovery Plan or to provide rapid local access to a remote data volume. Typically, data is replicated remotely to safeguard against local or even regional data

threats as part of an overall Disaster Recovery Plan.





Communication LinksA Storage Center controller uses multiple types of communication links for both data

transfer and administrative functions. Communication links are classified into three types: front end, back end, and system administration.

Figure 2. SC8000 Controller Communication Links

Item Description Speed Type

1 Server with Fibre Channel Host Bus Adapters (HBAs)

8 Gb or 16 Gb Front End

2 Fibre Channel Switches 8 Gb or 16 Gb Front End

3 Server with Fibre Channel over Ethernet (FCoE) HBAs or iSCSI HBAs

10 Gb

1 Gb or 10 Gb

Front End

4 Ethernet Switches 1 Gb or 10 Gb Front End

5 SC8000 Controller IO card‐dependent N/A

6 SAS Enclosure

Note: FC enclosures

are

supported

for

SC8000 controller migrations only.

6 Gb per channel Back End

7 Ethernet 10 Mb, 100 Mb, or 1 Gb

capability (see Note, page 5)

System

Administration

8 Serial 115,200 Kbps System

Administration

1

2

3

4

5

6 7

8



Communication Links

Dell Compellent 5

Front EndFront‐End connectivity provides connections from servers to controllers using either Ethernet (iSCSI) or Fibre Channel switches. Front‐End connectivity also supports all replication traffic.

iSCSI connections provide reads and writes from a server to a controller through an

Ethernet

switch. Fibre Channel over Ethernet (FCoE) uses the FCoE protocol for data on the front end for

lossless transmission of data.

Fibre Channel (FC) connections on the front end are used to provide reads and writes from a server to a controller.

Back EndBack‐end connectivity is strictly between the controllers and enclosures. The following

protocols are supported to communicate with the enclosures.

SAS uses a point‐to‐point switched top topology on four lanes. Each lane can perform

concurrent IO transactions at 6 Gb/sec. (Transfer speeds for earlier versions are 3 Gb/

sec.) Fibre Channel connections were used on the back end for CT‐SC040 controllers. Fibre

Channel IO cards can be migrated from CT‐SC040 controllers to SC8000 controllers.

System AdministrationThe following connections are used for communicating with computers outside of Storage

Center:

Serial: Used for initial configuration and other service‐related tasks.

Ethernet: Used for administration and IPC between the controllers.

ETH 0 port: Configuration, administration, and management of a Storage Center.

ETH

1

port:

Inter‐

Process

Communications

(IPC)

between

controllers.

iDRAC: Provides access to the Integrated Dell Remote Access Controller (iDRAC) for integrated peer controller management through a dedicated 1 Gb Ethernet port.

Note: The Ethernet ports on the back of the controller can operate at 10 Mb , 100

Mb or 1 Gb. These ports are not used for server or enclosure connectivity. For optimal performance, connect to the port using 1 Gbps.





SC8000 ControllerThe Storage Center SC8000 controller ships with two CPUs, a cache card, an Integrated Dell Remote Access Controller 7 (iDRAC7), and a four‐port Intel network daughter card. Up to

six IO cards can be installed: three full‐height and three low‐profile. The Storage Center OS

is installed on an embedded Secure Digital (SD) card.

Figure 3. Dell Compellent SC8000 Controllers

Component Description

Processor 2.50 GHz Dual 6 core

Bus Speed 1333 MHz

System Cache 16 GB

(expandable to 64 GB)

Cache Card 512 MB

PCIe (Slot 7)

Expansion Slots Gen 3 PCIe:Three full height,Three low profile

Transport Speeds

Fibre Channel

FCoE

SASiSCSI

8 Gb or 16 Gb10 Gb3 Gb, 6 Gb1 Gb, 10 Gb

Note: 3 Gb SAS is supported for migrations only; 3 Gb SAS

enclosures are supported using a 6 Gb IO Card.

Maximum Front‐End (FC) Ports 14(Using two 4‐port IO cards plus three 2‐port IO cards)

Maximum Back‐End Ports 20(Using five 4‐port IO cards)

Maximum Back‐End SAS Chains Supported

6

Maximum 6 Gb SAS Drives 168 drives/chain, up to 1008 total drives

Maximum 3 Gb SAS Drives 48 drives/chain = 288



SC8000 Controller

Dell Compellent 7

SC8000 Front-Panel Features and IndicatorsThe front panel of the controller contains power and reset switches, and an LCD panel that shows system ID, status, and error information.

Figure 4. Front Panel Features and Indicators

Form Factor 2U

Power Supplies 2

Fans 6

Item Name Icon Description

1 Power‐on indicator, power button

The power‐on indicator is illuminated when the controller power is powered on. The power button controls the power supply output to the controller.

2 NMI button For the SC8000, this button is disabled in the BIOS.

3 System

identification

button

Used

to

locate

a

particular

controller

within

a

rack.

When

a

System ID button on the front or back panel is pressed, the front LCD panel and the back system status indicator flash until one

of the buttons is pressed again.

• Press to toggle the system ID on and off.

• If the controller stops responding during POST, press and

hold the system ID button for more than five seconds to enter BIOS progress mode.

4 Video connector Allows you to connect a VGA monitor to the controller.

5 LCD menu buttons — Allows you to navigate the control panel LCD menu.

6 LCD panel — Displays system ID, status information, and system error messages.

• The LCD lights blue during normal controller operation.

• The LCD lights amber when the controller needs attention, and the LCD panel displays an error code followed by

descriptive text.

Note: If the controller is connected to a power source and an

error is detected, the LCD lights amber regardless of whether the controller is turned on or off.

Component Description

21 4 65

7 8 9

3





SC8000 LCD Panel Features

The LCD panel provides controller information, status messages, and error messages to

indicate when the controller is operating correctly or when it needs attention.

The LCD backlight lights blue during normal operating conditions and lights amber to

indicate an error condition.

The LCD backlight remains off if LCD messaging is turned off through the iDRAC, the

LCD panel,

or

other

tools.

Figure 5. LCD Panel Features

Home Screen

The Home

screen

displays

user

‐configurable

information

about

the

controller.

This

screen

is displayed during normal operation when there are no status messages or errors.

To navigate to the Home screen from another menu, continue to select the up arrow

until the Home icon is displayed, and then select the Home icon.

From the Home screen, press the Select button to enter the main menu.

7 vFlash media card

slotNot used for the SC8000.

8 USB connectors (2) Allows you to connect USB devices to the controller. The ports are USB 2.0‐compliant.

9 EST panel — A slide‐out panel containing an information tag that lists

system information including the Express Service Tag, embedded NIC port 1 MAC address, and iDRAC7 Enterprise

card MAC address.

Item Button Description

1 Left Moves the

cursor

back

in

one

‐step

increments.

2 Select Selects the menu item highlighted by the cursor.

3 Right Moves the cursor forward in one‐step increments.

During message scrolling:

• Press once to increase scrolling speed

• Press again to stop

• Press again to return to default scrolling speed

• Press again to repeat the cycle




SC8000 Controller

Dell Compellent 9

Setup Menu

The Setup menu displays user‐configurable defaults for iDRAC, LCD error messages, and

the Home screen.

View Menu

The Setup menu displays iDRAC, asset, power, and temperature information.

Note: When you select an option in the Setup menu, you must confirm the option

before proceeding to the next action.

Option Description

iDRAC Select DHCP or Static IP to configure the network mode. If Static IP is selected, the

available fields are IP , Subnet (Sub) , and Gateway (Gtw). Select Setup DNS to

enable DNS and to view domain addresses. Two separate DNS entries are available.

Set error Select SEL to display LCD error messages in a form that matches the description in

the System Event Log. This is useful when trying to match an LCD message with a

System Event Log entry.

Select Simple to display LCD error messages in a simplified user‐friendly

description. See SC8000

Service

Guide for a list of messages in this format.

Set home Select the default information display on the LCD Home screen. See View Menu to

see the options and option items that can be set as the default on the Home screen.

Note: When you select an option in the View menu, you must confirm the option

before proceeding to the next action.

Option Description

iDRAC IP Displays the IPv4 or IPv6 addresses for the iDRAC7. Addresses include DNS

(Primary and Secondary), Gateway , IP , and Subnet (IPv6 does not have Subnet).

MAC Displays the MAC addresses for iDRAC , iSCSI , or Network devices.

Name Displays the name of the Host , Model , or User String for the controller.

Number Displays the Asset tag or the Service Tag for the controller.

Power Displays the power output of the controller in BTU/hr or Watts. The display format can be configured in the Set home submenu of the Setup menu.

Temperature Displays the temperature of the controller in Celsius or Fahrenheit. The display

format can be configured in the Set home submenu of the Setup menu.





SC8000 Back-Panel Features and IndicatorsThe back panel of the controller contains IO card slots, a system identification button, connectors, and power supplies.

Figure 6. SC8000 Controller Back View


Slots 1–3 Low‐profile IO card

slots— Ports are numbered beginning with port 1 on the left.

Slots 4–6 Full‐height IO card

slots

— Ports are numbered beginning with port 1 on the right.

Slot 7 Cache card slot — Hosts the cache card.

1 System

identification

button

Used to locate a particular controller within a rack. When a

System ID button on the front or back panel is pressed, the

front LCD panel and the back system status indicator flash

until one of the buttons is pressed again.

• Press to toggle the system ID on and off.

• If the controller stops responding during POST, press and hold the system ID button for more than five

seconds to enter BIOS progress mode.

2 System

identification

connector

— Connects the optional system status indicator assembly

through the

optional

cable

management

arm.

3 iDRAC — Connects to the Ethernet switch in the rack.

4 Serial port Allows you to connect to the controller using a serial interface.

5 Video connector Allows you to connect a VGA monitor to the controller.

6 USB connectors Allows you to connect USB devices to the controller. The

ports are USB 2.0‐compliant.

7 Embedded

Ethernet connectorsConnects the controller to the Ethernet switch and to other controllers in the rack. The ports function as follows:

• Port 1:

ETH1 ‐10GbE

capable,

configured

for

1GbE

(Connect to second controller for IPC).

• Port 0: ETH0 ‐1GbE (Connects to the Ethernet switch for system login, email, alerts, SNMP traps, Phone Home

data, and access for software).

Note: Ports 2 and 3 are not used.

8 Power Supply 1 — Hot‐swappable, 750 W AC

100‐240 VAC, auto‐ranging, 50/60 Hz.9 Power Supply 2 —

43 5 76 8

IPC

9

IO card

21

IO card

1 3 0 2

cache cardIO card

IO card

IO card

MGMT

IO card



SC8000 Controller

Dell Compellent 11

NIC Indicator Codes

The embedded Ethernet connectors include status indicators.

Figure 7. NIC Indicator

Power Indicator Codes

Each AC power supply has an illuminated translucent handle.

Figure 8. AC Power Supply Status Indicator

Item Name Indicator Code

1 Link indicator • Off: The NIC is not connected to the network.

• Green: The NIC is connected to a valid network at its maximum port speed (1 Gbps or 10 Gbps).

• Amber: The NIC is connected to a valid network at less than its maximum port speed.

2 Activity

indicator• Flashing: Indicates transmit/receive activity.

• Steady: Indicates valid network connection.


1 AC power supply status indicator/

handle

• Not lit: Power is not connected.

• Green: A valid power source is connected to the power supply and the

power supply is operational.

• Flashing amber: Indicates a problem with the power supply.

• Flashing green: When hot‐adding a power supply, this indicates that the power supply is mismatched with the other power supply (in terms of efficiency, feature set, system status, or supported voltage). Replace

the power supply that has the flashing indicator with a power supply

that matches the capacity of the other installed power supply.





SC280 SAS EnclosuresSAS enclosures hold drives for data storage and connect to the controllers through

back‐end ports. The Storage Center SC280 is a 5U size 6 GB SAS enclosure. The SC280

enclosure supports up to 84 hard drives installed in two drawers of 42 drives each. The

SC280 enclosures

also

contain

two

power

supply

units,

five

cooling

fan

modules,

and

two

redundant enclosure management modules (EMMs).

The following requirements apply to SC280 enclosures:

SC280 enclosures cannot be connected to the same chain as any other enclosures.

Each chain supports a maximum of two SC280 enclosures.

A SAS IO card can support mixed chains (for example, a chain of SC280 enclosures, and

a chain of SC200 enclosures), however the enclosures must all be 6 GB.

Controllers must be running Storage Center OS 6.4.1 or later to detect SC280 enclosures.

Caution: The power supplies must be of the same input type and have the same

maximum output power. Mismatched power supplies result in an error condition.

Caution: AC power supplies support both 220 V and 110 V input voltages. When

two identical power supplies receive different input voltages, they can output

different wattages and trigger a mismatch.

Caution: When correcting a power supply mismatch, replace only the power supply with the flashing indicator. Swapping the opposite power supply to make a

matched pair can result in an error condition and unexpected controller shutdown.



SC280 SAS Enclosures

Dell Compellent 13

SC280 Enclosure Front Panel Features and IndicatorsThe overall enclosure status is shown on a panel located on the left side of the enclosure.

Figure 9. SC280 Enclosure Front Panel Features and Indicators

Item Feature/Indicator Icon Description

1 Unit ID display A numerical display of the enclosure unit identification number. This number is set by Storage

Center.

2 Input switch Not currently used (though it can be used to set the

Unit ID Display, the ID is automatically reset by the

Storage Center).

3 System power indicator • Amber: Enclosure is in standby (not operational).

• Green: Enclosure is on (operational).

4 Module fault Amber: Hardware fault (PCM fault, Fan fault, SSB

module fault. Check indicators on individual modules).

5 Logical status indicator Amber: change of status or fault from something other than the enclosure itself (this may be from an internal or external RAID controller or HBA, but is usually

associated with a disk drive as indicated by its own

fault LED).

6 Drawer Fault

1

Amber:

drive,

cable,

or

sideplane

fault

has

occurred

in

drawer 1.

7 Drawer Fault 2 Amber: drive, cable, or sideplane fault has occurred in

drawer 2.

4

3

5

2

1

6

7





SC280 Drawer Front-Panel Features and IndicatorsEach side of each drawer shows status using LED indicators.

Figure 10. SC280 Drawer Front Panel Features and Indicators

Item Feature/Indicator Icon Description

1 Sideplane OK/Power • Off:

Sideplane

card

or

cable

fault.

• Green: Sideplane card and cable are functional.

2 Drawer Fault Amber: Sideplane card fault or drive failure causing

loss of availability or redundancy.

3 Logical fault indicator • Amber: Host indicated drive fault.

• Flashing Amber: Array(s) in impacted state.

4 Cable Fault Amber: Cable fault.

5 Activity Bar Graph Six variable‐intensity LEDs dynamically display drive

access in the enclosure drawer.

4

3

5

2

1




Dell Compellent 15

SC280 Back-Panel Features and IndicatorsThe enclosure back panel provides controls to power up and reset the enclosure, indicators to show the enclosure status, and connections for back‐end cabling.

Figure 11. SC280 Back Panel Identification

Item Name

1 Optional cable retention positions (4).

2 IO enclosure management modules (2). See SC280 EMM Features and Indicators on

page 16.

3 Fan modules (5).

4 Power supply units (2). See SC280 Power Supply Unit Features and Indicators on page 17.

5 Power switches (2).

6 Optional cable retention positions (2).

2

1

4

3

5

6





SC280 EMM Features and IndicatorsSC280 enclosures include two Enclosure Management Modules (EMM) in two interface

slots. Each EMM IO Module includes an EEPROM that holds data describing the function

and capability of the EMM module. Each EMM module can discover the type and

capabilities of its partner EMM module within the enclosure. Incompatible configurations result in an enclosure system alarm.

Each port has four separately arbitrated physical lanes. A green LED indicates the status of each lane. The IO Module and Fault indicators provide status as described below.

Figure 12. IO Module Indicators


1 Power indicator • Green (steady): Module OK.

• Green (flashing): Vital product data (VPD) fault.

• Off: Module fault.

2 IO Module fault indicator

Amber: IO module error.

3 Console — Factory use only.

4 Lane LEDs — • Solid Green: Connected, No activity.

• Flashing: Activity.

5 SAS port A (in) Connects to other enclosures.

6 SAS port B (out) Connects to other enclosures.

7 SAS Port C The C‐port always connects to the controller.

2

1 43

5 6 7




Dell Compellent 17

SC280 Power Supply Unit Features and IndicatorsSC280 enclosures include two Power Supply Units (PSUs) in two interface slots.

Figure 13. SC280 PSU Features and Indicators

Separate and unique conditions are indicated if all three LEDs are in the same state:

If all three LEDs are off, then there is no AC power to either PSU.

If all three LEDs are on, then the General Enclosure Management (GEM) software has

lost communication with the PSU.


1 Release latch —

2 PSU fault indicator • Amber (steady) — PSU fault, PSU not supplying

power

• Amber (flashing) — PSU firmware is downloading

3 AC power indicator • Amber (steady) — AC power is not detected

• Amber (flashing) — PSU firmware is downloading

4 Power OK indicator • Green (steady) — This PSU is providing power

• Green (flashing) — AC power is present, but this PSU is in standby mode (the other PSU is providing

power)

5 Power switch — Controls power for the enclosure.

43 521





Fan Module Features and IndicatorsSC280 enclosures include five fan modules in five interface slots.

Figure 14. SC280 Fan Module Features and Indicators

Item Control/Feature Icon Description

1 Release latch

2 Module OK Green — Module OK

3 Battery fault Not currently used

4 Fan fault Amber — Loss of communication with the fan module, or reported fan speed is out of tolerance

1

2

3

4




Dell Compellent 19

SC280 Enterprise Plus DrivesEnterprise Plus Drives can only be installed in SC280 enclosures. An indicator gives status and activity information as described below.

Figure 15. SC280 Hard Drive Indicators


1 Hard drive activity indicator • Steady Amber — Drive fault

• Flashing Amber (on 1 sec / off 1 sec) — Drive or enclosure

indicator is set to On in System Manager. (With the drive

indicator, the containing drawer fault LED also flashes; with the enclosure indicator, all drives’ and both drawers’ fault LEDs flash.)

1





SC280 Drive NumberingSC280 drives are located in two drawers, each containing three rows of drives. The drives

are numbered 1–42 in drawer 1, from front to back and left to right, and 43–84 in drawer 2.

Figure 16. Hard Drive Numbering

SC200/220 SAS EnclosuresSAS enclosures hold drives for data storage and connect to the controllers through

back‐end ports. The Storage Center SC200 and SC220 are 2U size SAS enclosures. The

SC200 enclosure supports up to 12 3.5‐inch hard drives installed in a four‐column, three‐

row configuration. The SC220 enclosure supports up to 24 2.5‐inch hard drives installed

vertically side‐ by‐side. The SC200 and SC220 enclosures ship with two power supply/cooling fan modules and two redundant enclosure management modules (EMMs).

The following requirements apply to SC200 and SC220 enclosures:

SC200 and SC220 enclosures cannot be connected to the same chain as any other enclosures.

Controllers must be running Storage Center OS 6.2 or later to detect SC200 and SC220

enclosures.



SC200/220 SAS Enclosures

Dell Compellent 21

SC200/220 Front-Panel Features and IndicatorsThe front panel shows the enclosure and power status.

Figure 17. SC200 Front Panel Features and Indicators

Figure 18. SC220 Front Panel Features and Indicators


1 Enclosure status indicator

Lights when the enclosure power is on.

• Off: No power.

• On steady blue: Normal operation.

• Flashing blue: Indicates that Storage Center is identifying

the enclosure.

• On steady amber: Enclosure is turning on or was reset.

• Flashing amber: Enclosure is in the fault state.

2 Power status

indicator

Lights when at least one power supply is supplying power to

the enclosure.

• Off: Both power supplies are off.

• On steady green: At least one power supply is providing

power to the enclosure.

3 Hard drives — • SC200: Up to 12 3.5‐inch hard drives.

• SC220: Up to 24 2.5‐inch hard drives.

2

1

3

2

1

3





SC200/220 Back-Panel Features and IndicatorsThe enclosure back panel provides controls to power up and reset the enclosure, indicators to show the enclosure status, and connections for back‐end cabling.

Figure 19. SC200/SC220 Back Panel Features and Indicators


1 DC power indicator • Green: Normal operation. The power supply

module is supplying DC power to the enclosure.

• Off: Power switch is off, the power supply is not connected to AC power, or there is a fault condition

2 Power supply/cooling

fan indicator• Amber: Power supply/cooling fan fault is detected

• Off: Normal operation

3 AC power

indicator • Green:

Power

supply

module

is

connected

to

a

source of AC power, whether the power switch is on

• Off: Power supply module is disconnected from a

source of AC power

4 Power switches (2) — Controls power for the enclosure. There is one switch

for each power supply/cooling fan module.

5 Power supply/cooling

fan modules (2)— Contains a 700 W power supply and fans that provide

cooling for the enclosure

6 Enclosure Management Modules (2)

— EMMs provide the data path and enclosure

management functions for the enclosure

! !

Compellent SC2

Compellent SC2

4

2

1

5 6

3




Dell Compellent 23

SC200/220 EMM Features and IndicatorsSC200 and SC220 enclosures include two Enclosure Management Module (EMM) IO

modules in two interface slots.

Figure 20. SC200/SC220 EMM Features and Indicators


1 System status indicator Not used on SC200/220 enclosures

2 Debug port For

engineering

use

only

3 SAS port A (in) Connects to the controller or to other enclosures. SAS ports A and B can be used for either input or output, however for cabling consistency, use port A as an input port.

4 Port A link status • Green: All the links to the port are connected

• Amber: One or more links are not connected

• Off: Enclosure is not connected

5 SAS port B (out) Connects to the controller or to other enclosures. SAS ports A and B can be used for either input or output, however for cabling consistency, use port B as an output port.

6 Port B link status • Green: All the links to the port are connected

• Amber: One or more links are not connected

• Off: Enclosure is not connected

7 EMM status indicator • Steady Green: Normal operation

• Amber: Enclosure did not boot or is not properly

configured

• Flashing Green: Automatic update in process

• Flashing Amber Twice: Enclosure is unable to

communicate with other enclosures

• Flashing Amber Four Times: Firmware update failed

• Flashing Amber Five Times: Firmware versions are

different between the two EMMs

Compellent SC2

1 2 73 4 5 6





SC200/220 Enterprise Plus DrivesEnterprise Plus Drives can only be installed in SC200/220 enclosures. Drives are installed

either vertically (SC220) or horizontally (SC200) in the enclosure. Indicators give status and

activity information as described below.




1 Hard drive activity indicator • Flashing green: Indicates drive activity

• Steady green: Indicates no drive activity

2 Hard drive status indicator • Steady green: Normal operation

• Flashing green (on 1sec/ off 1 sec): Drive or enclosure

indicator is set to On in System Manager. (With the

enclosure indicator, all drives’ fault LEDs flash.)

• Off: No power to the drive

1

2

1 2




Dell Compellent 25

SC200/220 Drive NumberingIn SC200 and SC220 enclosures, drives are numbered from left to right starting from 0. Storage Center identifies drives as Disk-XX ‐YY , where XX is the number of the enclosure

that physically contains the drive, and YY is the drive position inside the enclosure.

SC200: Drives are numbered in rows starting from 0 at the top‐left drive.

Figure 23. SC200 Enclosure Drive Numbering

SC220: Drives are numbered starting from 0 at the left‐most drive.

Figure 24. SC220 Enclosure Drive Numbering

Drive 1

Drive 5

Drive 9

Drive 2

Drive 6

Drive 10

Drive 3

Drive 7

Drive 11

Drive 4

Drive 8

Drive 0

0 1 32 4 6 10 115 7 8 9 12 13 14 16 17 18 19 20 21 22 2315





EN-SASx6x12/24 EnclosuresSAS enclosures hold drives for data storage and connect to the controllers through

back‐end ports. EN‐SASX6X12 enclosures can hold up to 12‐3.5ʺ drives, and EN‐SASX6X24

can hold up to 24‐2.5ʺ drives.

EN‐SASx6x12/24 enclosures cannot be connected to the same chain as SC200 or SC220

enclosures.

EN-SASx6x12/24 Front-Panel Features and IndicatorsThe enclosure front panel provides controls to power up and reset the enclosure and

indicators to show the enclosure status. Insert the enclosure into a rack so that the LED

display is on the left side.

Figure 25. SAS Enclosures Front View — Controls and Indicators


1 Mute button Mutes the alarm

2 System power indicator • Green: Power is on

• Amber: Unit is on standby

3 Module fault indicator Amber: Enclosure module failure (PCM fault, Fan fault, SSB module fault. Check indicators on individual modules)

4 Logical fault indicator • Amber: Drive failure

• Flashing Amber: Unexpected enclosure ID (Module

Fault also flashes amber)

5 LED display — Indicates the enclosure ID number — the software sets this number during installation, and matches the Disk ID

displayed in the Storage Center System Manager

1 3 4

5

2 EN-SASX6X12 Enclosure

EN-SASX6X24 Enclosure



EN-SASx6x12/24 Enclosures

Dell Compellent 27

EN-SASx6x12/24 Back-Panel Features and IndicatorsThe enclosure back panel provides controls to power up and reset the enclosure, indicators to show the enclosure status, and connections for back‐end cabling.

Figure 26. SAS Enclosure Rear View — Controls and Indicators


1 AC power indicator • Green: Normal operation

• Amber: No AC power

2 Fan indicator • Green: Normal operation

• Amber: Fan failure

3 PCM status indicator • Green: Normal operation

• Amber: Power supply failure

4 DC power indicator • Green: Normal operation

• Amber: No DC power

5 Power switch — Controls power for the enclosure

6 Power Cooling Module (PCM) — one of two

— Contains fans that provide cooling for the enclosure

7 Storage Bridge Bay (SBB) — one of two — See EN‐SASx6x12/24 SBB Module Features and Indicators on page 28

1

2

3

4

5 6 7





EN-SASx6x12/24 SBB Module Features and IndicatorsSAS enclosures include two Storage Bridge Bay (SBB) IO modules in two SBB‐compliant interface slots. Each SBB IO Module includes an EEPROM that holds data describing the

function and capability of the SBB module. Each SBB module can discover the type and

capabilities of its partner SBB module within the enclosure. Incompatible configurations result in an enclosure system alarm.

Each port has four separately arbitrated physical lanes. A green LED indicates the status of each lane. The IO Module and Fault indicators provide status as described below.

Figure 27. IO Module Indicators


1 IO Module indicator On Steady: Normal operation

2 IO Module fault indicator

On: IO module error

3 SAS port A (in) Connects to other enclosures

4 Lane LEDs — • Solid Green: Connected, No activity

• Flashing: Activity

5 SAS port B (out) Connects to other enclosures

6 SAS Port C The C‐port always connects to the controller.

1

2

4 63 5



EN-SASx6x12/24 Enclosures

Dell Compellent 29

EN-SASx6x12/24 Standard SAS DrivesStandard SAS drives can only be installed in EN‐SASx6x12/24 enclosures. Drives are

installed either vertically or horizontally in the enclosure. Indicators give status and

activity information as described below.

Figure 28. EN-SASx6x12 Standard SAS Drive Indicators

Figure 29. EN-SASx6x24 Standard SAS Drive Indicators

Item Name Description

1 Amber LED • Off: No drive, or drive is operating

• On: Drive fault

• Flashing (on 1 sec/off 1 sec): Drive or enclosure

indicator is set to On in System Manager.

2 Green LED • Green: Connected, No activity

• Flashing: Activity

3 Anti‐tamper Indicator (when

present)• Red: Locked

• Black: Unlocked

4 Lock (when present) Insert key or T10 Torx driver and turn to lock/unlock

1

2

3 4

1 2





EN-SASx6x12/24 Drive NumberingIn EN‐SASX6X12 and EN‐SASX6X24 enclosures, drives are numbered from left to right starting from 1. Storage Center identifies drives as Disk-XX ‐YY , where XX is the number of the enclosure that physically contains the drive, and YY is the drive position inside the

enclosure.

EN‐

SASX6X12:

Drives

are

numbered

in

rows

starting

from

1

at

the

top‐

left

drive.

Figure 30. EN-SASx6x12 Enclosure Drive Numbering

EN‐SASX6X24: Drives are numbered starting from 1 at the left‐most drive.

Figure 31. EN-SASx6x24 Enclosure Drive Numbering

Drive 1

Drive 5

Drive 9

Drive 2

Drive 6

Drive 10

Drive 3

Drive 7

Drive 11

Drive 4

Drive 8

Drive 12

241 32 4 6 10 115 7 8 9 12 13 14 16 17 18 19 20 21 22 2315



Dell Compellent 31

2 Install the Hardware

Verify that the ordered equipment arrived safely, install IO cards in the controller(s), disks in the enclosures (as required) and mount the equipment in a rack.

ContentsPrepare for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Install IO Cards the Controller(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Label the Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Mount the Hardware in a Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Install Drives in SC280 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Install Drives in EN‐SASx6x12/24 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Install Enterprise Plus Drives in SC200/220 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Prepare for InstallationBefore you begin, make sure that the correct equipment is available, the installation

environment is

ready,

and

you

have

the

necessary

materials.

Unpack and Inventory the Storage Center EquipmentMake sure the equipment that was ordered arrived safely on site:

Controllers

Enclosures and drives

IO cards

Front‐end cables

Back‐end cables

Switches

Prepare the Installation EnvironmentMake sure that the environment is ready for installation.

Rack Space: There must be sufficient space in the rack to accommodate the Storage

Center controller(s), enclosures, and switches.

Power: Power must be available in the rack, and the power delivery system must meet the power requirements for the Storage Center.



Chapter 2 Install the Hardware


Connectivity: The rack must be wired for connectivity to the management network and

any networks that carry front‐end IO from the Storage Center to servers.

Gather Required MaterialsMake sure that you have the following items before you begin the installation.

Safety PrecautionsTo avoid injury and damage to the equipment, always follow these safety precautions.

If equipment described in the document is used in a manner not specified by Dell Compellent, the protection provided by the equipment may be impaired. For your safety

and protection, observe the following rules:

Electrical Safety PrecautionsAlways follow electrical safety precautions to avoid injury and damage to the equipment.

Provide a suitable power source with electrical overload protection. All components in the Storage Center must be grounded before applying power. Make sure that there is a

safe electrical earth connection to power supply cords. Check the grounding before

applying power.

The plugs on the power supply cords are used as the main disconnect device. Make sure

that the socket outlets are located near the equipment and are easily accessible.

Know the locations of the equipment power switches and the roomʹs emergency power‐off switch, disconnection switch, or electrical outlet.

Required Item Description

Storage Center license file Makes settings available depending on what features were

purchased.

RS‐232 serial cable and PC or laptop

Used to run commands and view console messages during

controller configuration.

Computer connected to the

same network as the Storage

Center

Used to connect to the Storage Center System Manager (through a

web browser) to complete the Storage Center configuration.

Hardware Serial Number (HSN) and System Serial Number (SSN)

Used to configure the controller(s).

Storage Architect or Business Partner supplied pre‐

installation document(s)

(Optional) Provide site‐specific settings used during deployment:

• List of hardware needed to support storage requirements

• Optional connectivity diagrams to illustrate cabling between the

controllers, enclosures, switches, and servers

• Optional network information, such as IP addresses, subnet masks, gateways

Storage Center Maintenance

CD(Optional) Used to update the Storage Center OS when internet access is not available.

Note: See the safety and regulatory information that shipped with each Storage

Center component. Warranty information may be included within this document or as a separate document.



Safety Precautions

Dell Compellent 33

Do not work alone when working with high‐voltage components.

Do not use mats designed to decrease electrostatic discharge as protection from

electrical shock. Instead, use rubber mats that have been specifically designed as

electrical insulators.

Do not remove covers from the Power Control Module (PCM). Disconnect the power connection before removing a PCM from the enclosure.

Do not remove a faulty PCM unless you have a replacement model of the correct type

ready for insertion. A faulty PCM must be replaced with a fully operational module

within 24 hours.

Permanently unplug the enclosure before you move it or if you think it has become

damaged in any way. When powered by multiple AC sources, disconnect all supply

power for complete isolation.

General Safety PrecautionsTo avoid injury and damage to the equipment, always follow general safety precautions.

Keep the area around the chassis clean and free of clutter.

Place the chassis cover and any system components that have been removed away from

the controller or on a table so that they are not in the way of foot traffic.

While working on the controller, do not wear loose clothing such as neckties and

unbuttoned shirt sleeves, which can come into contact with electrical circuits or be

pulled into a cooling fan.

Remove any jewelry or metal objects from your body because they are excellent metal conductors that can create short circuits and harm you if they come into contact with

printed circuit

boards

or

areas

where

power

is

present.

Do not lift an enclosure by the handles of the Power Cooling Modules (PCMs). They are

not designed to hold the weight of the entire enclosure, and the enclosure cover may

become bent.

Before moving an enclosure, remove the PCMs to minimize weight.

In order to comply with applicable safety, emission, and thermal requirements, do not remove bay covers from enclosures. Make sure that all bays are populated with plug‐in

modules.

Do not remove bay covers or drives until ready to replace them.

Warning: Disconnect power from the controller when removing or installing

components that are not hot‐swappable. When disconnecting power, first power down the controller using the Storage Center System Manager and then unplug the

power cords from all the power supply modules in the controller.

Warning: To avoid injury, do not attempt to the lift a controller or enclosure by

yourself. Always get assistance when lifting the controller.

Caution: Do not operate the controller without the cover, except when replacing

cooling fans.

Warning: The memory modules may be hot for several minutes after the controller has been powered down. Wait for the memory modules to cool before handling

them.





Electrostatic Discharge PrecautionsTo avoid injury and damage to the equipment, always follow electrostatic discharge (ESD) precautions t

Electrostatic discharge (ESD) is generated by two objects with different electrical charges coming into contact with each other. The resulting electrical discharge can damage

electronic components and printed circuit boards. Follow these guidelines to protect your equipment from ESD:

It is recommended that you always use a static mat and static strap while working on

components in the interior of the controller.

Observe all

conventional

ESD

precautions

when

handling

plug

‐in

modules

and

components.

Use a suitable ESD wrist or ankle strap.

Avoid contact with backplane components and module connectors.

Keep all components and printed circuit boards (PCBs) in their antistatic bags until ready for use.

Caution: To ensure proper controller cooling, memory module blanks must be

installed in any memory socket that is not occupied.

Warning: To prevent eye damage, do not stare into the laser beam aperture of an

SFP+ transceiver.



Install IO Cards the Controller(s)

Dell Compellent 35

Install IO Cards the Controller(s)Before you mount the controller(s) in a rack, install the IO cards.

Open the CoverOpen the cover to gain access to the inside of the controller.

1 Rotate the latch release lock counter clockwise to the unlocked position.

2 Lift the latch on top of the controller and slide the cover back.

3 Grasp the cover on both sides, and carefully lift the cover away from the controller.

Figure 32. Opening the Cover

Caution: Do not operate the controller without the cover, except when replacing

cooling fans.

Caution: Do not slide the controller into a rack with the cover open. Riser 2

contains a chassis intrusion detection switch that can be easily damaged when

sliding a controller into the rack with the cover open.

1 Controller cover

2 Latch

3 Latch release lock

1

23





Remove the Cooling Shroud

Remove the cooling shroud to gain access to the memory sockets.

1 Hold onto the two touch points of the cooling shroud.

2 Lift the cooling shroud away from the controller.

Figure 33. Removing and Inserting the Cooling Shroud

Insert the Cooling Shroud

Use this procedure to install the cooling shroud.

1 Align the tabs on the cooling shroud with the securing slots on the chassis.

2 Lower the cooling shroud into the chassis until it is firmly seated.

1 Cooling shroud

2 Touch points

Note: For proper seating of the cooling shroud in the chassis, ensure that the

cables inside the controller are routed along the chassis wall and secured using

the cable securing bracket.

1

2




Dell Compellent 37

Install IO CardsInstall the IO cards in the controller(s) based on the IO card priority rules. For dual‐controller systems, install IO cards in the same locations in both controllers.

Determine Where IO Cards Should Be Installed

The following

table

provides

guidelines

for

installing

IO

cards

to

ensure

proper

cooling

and mechanical fit. Install IO cards using the card priority and slot priority order indicated.

Populate the slots as follows:

Install low‐profile IO cards in slots 3 through 1. After filling these slots, low‐profile

cards may be installed in slots 4, 5, and 6 when used with the adaptive bracket.

Install full‐height IO cards beginning in slot 6, followed by slot 5, then slot 4 if needed.

Slot 7 is reserved for the Cache Card.

Note: Low‐profile IO cards are shipped with an adaptive full‐height bracket that must be installed to use the IO card in a slot designed for a full‐height IO card. When

a low‐profile card is installed in a full‐height slot the ports are reversed, so port number 1 is on the right.

Note: To use Multi‐VLAN Tagging (MVLAN) install a Chelsio 10 Gb iSCSI card. MVLAN is managed in Enterprise Manager.

Type Card HeightSpeed(Gb)

Numberof Ports

CardPriority

SlotPriority

iSCSI Chelsio S320E‐LP‐CR

(SFP+ transceiver required for optical support)

Low‐profile 10 2 11 3, 2, 1, 4, 5

iSCSI Chelsio S320E‐CR* (SFP+ transceiver required for optical support)

Full‐height 10 2 10 4, 5, 6

iSCSI QLogic QLE4062 Low‐profile 1 2 7 3, 2, 1, 4, 5

SAS LSI SAS9201‐16E Full‐height 6 4 2 6, 5, 4

SAS LSI SAS9206‐16E Low profile 6 4 2 3, 2, 1, 6, 5, 4

Fibre Channel Emulex LPe12004‐M8* Full‐height 8 4 9 4, 5, 6

Fibre Channel Emulex LPe12002‐M8* Low‐profile 8 2 5 3, 2, 1, 4, 5

Fibre Channel QLogic QLE2662 Low‐profile 16 2 3 3, 2, 1, 4, 5,

6

Fibre Channel QLogic QLE2562 Low‐profile 8 2 4 3, 2, 1, 4, 5, 6

Fibre Channel QLogic QLE2564 Full‐height 8 4 8 4, 5, 6

FCoE Qlogic QLE8152 (SFP+

transceiver required for optical support)

Low‐profile 10 2 6 3, 2, 1, 4, 5

Cache card Dell Full‐height n/a n/a 1 7





* These IO cards cannot be ordered for SC8000 controllers. An SC8000 controller can contain these IO cards only if they weretransferred to the SC8000 controller during an upgrade from a CT‐SC030 or CT‐SC040 controller.

See Also

SC8000 Back‐Panel Features and Indicators on page 10

Install Low-Profile IO Cards in Slots 1–3

To install low‐profile IO cards, first remove riser 1.

1 Remove riser 1.

a Hold onto the touch points of the riser.

b Lift the riser from the riser connector on the system board.

Table 1. Removing Riser 1

1 Riser 1 cage 4 Riser guide, back (left)

2 Riser 1 5 Riser 1 connector

3 Riser guide, back (right) 6 Riser guide, front

1

2

3

456




Dell Compellent 39

2 Open the IO card latch by pressing the latch tab and rotating the latch down.

Figure 34. Installing an IO Card in Riser 1

3 Install each low‐profile IO card.

a Locate the slot where the IO card is installed.

Figure 35. Identifying Connectors on Riser 1

b Unpack the replacement IO card and prepare it for installation. For instructions, see

the documentation accompanying the IO card.

c Holding the IO card by its edges, position the card so that the card‐edge connector aligns with the IO card connector on the riser.

d Insert the card‐edge connector firmly into the IO card connector until the card is

fully seated.

e Close the IO card latch.

1 Riser 1 cage 4 IO card latch

2 IO card connector 5 IO card latch tab

3 IO card

1 IO card slot 1

2 IO card slot 2

3 IO card slot 3

Caution: Make sure that the IO card is fully seated in the IO card connector. IO cards that are not in full contact with the connector cause unpredictable

failures in the Storage Center.

1 2 3

4

5

1 2 3





4 Insert riser 1.

a Align the riser with the connector and the riser guides.

b Lower the riser into place until the riser is fully seated in the connector.

Table 2. Removing Riser 1

1 Riser 1 cage 4 Riser guide, back (left)

2 Riser 1 5 Riser 1 connector

3 Riser guide, back (right) 6 Riser guide, front

1

2

3

456




Dell Compellent 41

Install Full-Height IO Cards in Slots 4–6

Install full‐height IO cards installed in riser 2 and 3. Slots 4 and 5 are located in riser 2, and

slot 6 is located in riser 3.

1 Locate the slot where the IO card is installed.



1 Chassis intrusion switch

2 IO card slot 4

3 IO card slot 5

1 IO card slot 6

2 IO card slot 7

1 32

12





2 Lift the IO card latch out of the slot.

Figure 38. Replacing the IO Card in Riser 2 or 3

3 Unpack

the

replacement

IO

card

and

prepare

it

for

installation.

For

instructions,

see

the

documentation accompanying the IO card.

4 Hold the IO card by its edges and position the card so that the card‐edge connector aligns with the IO card connector on the riser.

5 Insert the card‐edge connector firmly into the IO card connector until the card is fully

seated. Use the supports provided on the cooling shroud.

1 IO card 3 IO card connector

2 IO card latch 4 Riser

Caution: Make sure that the IO card is fully seated in the IO card connector. IO

cards that are not in full contact with the connector cause unpredictable failures in Storage Center.

1

2

3

4




Dell Compellent 43

Figure 39. Seating the IO Card

6 Replace the IO card latch.

7 Press the touch‐point to release the card retention tab (not shown) and rotate the tab

until it locks in place over the IO card.

Close the CoverPerform this procedure to close the cover.

1 Lift the latch on the cover.

2 Place the cover onto the chassis and offset the cover slightly back so that it clears the

chassis hooks and lays flush on the chassis.

3 Push down the latch to move the cover into the closed position.

4 Rotate the latch release lock clockwise to secure the cover.

Figure 40. Closing the Cover

1 Controller cover

2 Latch

3 Latch release lock

1

23





Label the ControllersCreate two labels for each controller to facilitate identification in the rack. Apply labels to

the front and back of each controller.

Prerequisites

You must have a label maker, or four blank labels and a writing utensil.

Steps

1 Create two labels for each controller. Each label should contain the controller number and System Serial Number (SSN).

2 Apply two labels to each controller.

a Apply one label to the front of the controller on the top‐left corner.

b Apply one

label

to

the

rear

of

the

controller

on

the

middle

of

the

handle.

Figure 41. SC8000 Controller Labels

Line Label Information Example

1 Controller number CONTR1 or CONTR2

2 System Serial Number 10011

CONTR1

10011



Mount the Hardware in a Rack

Dell Compellent 45

Mount the Hardware in a RackDell Compellent recommends mounting the hardware in a rack to ensure rack safety and

to allow for expansion.

2U and 3U EnclosuresInstall 2U and 3U enclosures in the rack to allow for expansion and so that the rack does not become top‐heavy. This can be accomplished in one of two configurations.

Install the controllers on the bottom of the rack and the enclosures above the controllers.

Install the controllers in the middle of the rack and the enclosures above and below the

controllers.

Steps

1 Mount the controller(s) in a rack. See the instructions included with the rail kit for detailed steps.

2 Mount the enclosure(s) in the rack. See the instructions included with the rail kit for detailed steps.

Figure 42. Recommended Mounting Order — 2U and 3U Enclosures

1 Controllers

2 Enclosures

1

2





5U EnclosuresThe 5U enclosures can weigh up to 131 kg (288 lb) and should be installed in the lower portion of the rack to ensure rack stability.

When installed in a rack, the SC280 enclosure extends 36 in. from the front rack posts to the

back of the chassis. Rack modifications may be required to avoid blocking PDUs or to allow

proper strain

relief

for

SAS

cables.

Contact

Dell

Technical

Support

Services

if

site

preparation has not already been done.

Prerequisites

Make sure that the site has the following:

208 V power from an independent source or a rack power distribution unit with a UPS.

(110 V

power

will

not

work.)

A 5U space in the lower 20U of the rack. If the enclosure is to be installed above the 20U

mark (not recommended), a customer‐provided mechanical lift is required.

Power Distribution Unit (PDU) outlets must be type IEC‐320‐C19, with a minimum

output Amperage of 20A per connection.

Steps

Mount the SC280 enclosure into the rack using mounting rails, and optionally secure with

brackets to prevent tipping.

1 Mount the controller(s) in a rack. See the instructions included with the rail kit for detailed steps.

2 Mount the rails in the rack according to instructions included in the rail kit.

3 Mount the enclosure onto the rack rails, using two people to lift the enclosure into

position.

4 Install Hold Down Brackets (HDBs).

a Secure the fixing screws to the rear of the enclosure.

b Secure the HDBs to the rear of the rack.

Warning: A fully configured SC280 enclosure weighs up to 130.7 kg (287.5 lb). An

unpopulated enclosure weighs 62 kg (137 lb). To avoid injury, always lift with two

people, and use lifting straps when required.

If installed above the lower 20U of a rack, a customer‐provided mechanical lift must be used.

Warning: When unpacking the 5U enclosure, two people using lift straps are

required to avoid injury.



Mount the Hardware in a Rack

Dell Compellent 47

Figure 43. Recommended Mounting Order — 5U Enclosures

1 Controllers

2 Enclosures

1

2





Install Drives in SC280 Enclosures

Dell Compellent 49

Figure 44. Inserting an SC280 DDIC

See Also

SC280 Enterprise Plus Drives on page 19

1 DDIC 3 Drive fault LED

2 Release button

2

1

3





Install Drives in EN-SASx6x12/24 EnclosuresIf you are installing EN‐SASx6x12 and/or EN‐SASx6x24 enclosures, install drives in the

enclosures.

When installing drives into a 12‐drive enclosure, make sure that all drives in a column are

of the same spindle rate as shown in the following example. Populate the outer columns

first.

Installing 3.5" DrivesInstall 3.5ʺ drive carriers horizontally into the 12‐drive enclosure. If necessary, remove

drive blanks from the enclosures to make room for the drives.

1 Release the drive carrier handle by depressing the latch in the handle.

Figure 45. Release Drive Carrier Handle

2 Insert the Drive Carrier Module into the enclosure.

Figure 46. Installing a Drive Carrier Module

3 Make sure that the drive carrier is oriented so that the drive faces up and the handle

opens from the left.

4 Gently slide the drive carrier all the way into the enclosure.

Column 1 Column 2 Column 3 Column 4

Row 1 7.2K 15K 10K 15K

Row 2 7.2K 15K 10K 15K

Row 3 7.2K 15K 10K 15K







Installing 2.5" DrivesInstall 2.5ʺ drive carriers vertically into the 24‐drive enclosure.

1 Make sure that the carrier is oriented so that the drive is on the left side and the handle

opens from the top.

2 Release the carrier handle by pressing the latch in the handle downwards.

3 Insert the carrier into the enclosure in the vertical position.

Figure 49. 2.5" Drive Carrier Module in Open Position

4 Gently slide the carrier all the way into the enclosure until it is stopped by the lever on

the bottom of the carrier.

Figure 50. Inserting a 2.5" Drive Carrier Module (1)

5 Rotate the handle firmly until the handle fully engages. You will hear a click as the latch

engages and holds the handle closed.

See Also

EN‐SASx6x12/24 Standard SAS Drives on page 29

EN‐SASx6x12/24 Drive Numbering on page 30



Install Enterprise Plus Drives in SC200/220 Enclosures

Dell Compellent 53

Install Enterprise Plus Drives in SC200/220 EnclosuresSC200/220 enclosures are shipped with disks installed and/or empty drive blanks in

unused slots. The following instructions show the installation of the Dell Enterprise Plus

drive for reference only.

Figure 51. Installing a Drive

1 Insert the hard drive carrier into the hard drive bay.

2 Slide the drive into the bay until the carrier contacts the backplane.

3 Close the hard drive carrier handle to lock the hard drive in place.

4 Continue

to

push

firmly

until

you

hear

a

click

and

the

handle

fully

engages.5 When the enclosure is turned on and the drives spin up, make sure that the drive LEDs

are on (green), indicating normal conditions.

See Also

SC200/220 Enterprise Plus Drives on page 24

SC200/220 Drive Numbering on page 25

Note: Dell Enterprise Plus drives and Enterprise Solid State Drives (ESSDs) can

only be installed in SC200/220 enclosures.







Dell Compellent 55

3 Connect the Back End

Enclosures are connected to controllers using SAS, a point‐to‐point switched topology on

four lanes. Each lane can perform concurrent IO transactions at 6 Gb/sec. Dell Compellent recommends connecting the SAS drive enclosures to the controller(s) using the most redundant options that are available.

Contents

SAS Enclosure

Cabling

Guidelines .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

55Connect IPC for Dual‐Controller Storage Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Connect SC200/SC220 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Connect SC280 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Connect EN‐SASx6x12/24 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Label the Back‐End Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

SAS Enclosure Cabling GuidelinesMultiple SAS enclosures are connected to a controller by cabling the enclosures in series. A

series of interconnected enclosures is referred to as a chain. Each chain can contain up to

168 6 Gbps SAS drives.

A SAS chain begins at an initiator port in a controller IO card and connects to the first enclosure. Subsequent enclosures are connected in series. For single‐controller Storage

Centers, the chain ends at the last enclosure. For dual‐controller Storage Centers, the chain

ends in a target port in the opposite controller.

SAS RedundancyRedundant SAS cabling ensures that in the event an IO Card or port fails, IO continues to

flow through the remaining functioning path(s). For dual‐controller Storage Centers, redundant cabling also provides protection for controller failures. To achieve redundancy, each SAS chain is made up of two paths that are referred to as the A side and B side.



Chapter 3 Connect the Back End


SC8000 SAS Port TypesThere are two types of controller SAS ports: initiator only and initiator/target. SAS chains

begin with an initiator port. As shown in the following figure, ports 1–2 (circled in blue) on

SAS IO cards are initiator only, and ports 3–4 (circled in red) are initiator/target.

Figure 52. Controller SAS Port Types

Connect IPC for Dual-Controller Storage CentersIf you are configuring a dual‐controller Storage Center, connect the controllers with a

Category (Cat) 6 Ethernet cable. If the Storage Center only uses a single SAS chain, you

must also interconnect the controllers with additional SAS connections to make sure that sufficient IPC bandwidth is available.

1 Initiator Only (Ports 1–2)

2 Initiator/Target (Ports 3–4)

1

2



Connect IPC for Dual-Controller Storage Centers

Dell Compellent 57

Connect the Controllers with EthernetIn a dual‐controller Storage Center, the ETH 1 ports of the controllers must be directly

connected to each other.

1 Connect the ETH 1 (port 1) on one controller to the same port on the second controller. Use a Cat 6 cable for this connection.

Figure 53. Ethernet IPC Connection

2 Label both ends of the Ethernet IPC cable.

a Locate the IPC labels that shipped with the controller(s).

Figure 54. IPC Cable Label

b Near the connector, align the label perpendicular to the cable and affix it starting

with the top edge of the label.

Note: Storage Center currently runs the 10 Gb ports at 1 Gb speed. Use a Cat. 6

cable to ensure that a hardware change is unnecessary when 10 Gb rates are

implemented.

31 20

IPC MGMT

31 20

IPC MGMT





Figure 55. Align Cable Label

c Wrap the label around the cable until it fully encircles the cable. The bottom of each

pre‐made label is clear so that it does not obscure the text.

Figure 56. Wrap Cable Label

d Apply

a

matching

label

to

the

other

end

of

the

cable.



Connect IPC for Dual-Controller Storage Centers

Dell Compellent 59

Connect the Controllers with SASIf the Storage Center has only a single SAS chain, interconnect the controllers with

additional SAS connections to provide redundancy and to make sure that sufficient IPC

bandwidth is available. If two or more enclosure chains exist, IPC Direct Connect is

optional.

If the

Storage

Center

requires

SAS

IPC,

add

cabling

between

the

initiator

and

target

ports

on the controllers.

1 Controller A: IO Card port 2 (initiator) → Controller B: IO Card port 4 (target).

2 Controller B: IO Card port 2 (initiator) → Controller A: IO Card port 4 (target).

3 Label both ends of each SAS IPC cable.

a Locate the IPC labels that shipped with the controller(s).

Figure 57. IPC Cable Label











d Apply a matching label to the other end of the cable.

Connect SC200/SC220 EnclosuresThis section shows common cabling between the SC8000 controller and SC200/220 SAS

enclosures. Locate the scenario that most closely matches the Storage Center you are

configuring and follow the instructions, modifying them as necessary.

An SC200/SC220 cabling chain can contain up to 168 SAS drives, using either type of enclosure. The maximum number of any one type of enclosure is:

SC200: 14 enclosures

SC220: 7 enclosures

Each SAS IO card supports up to two chains of enclosures. All enclosures attached to the

same SAS IO card must be running at the same speed (all 6 Gb or 3 Gb).

SC200/220 SAS enclosure chains are cabled as follows.

Side A: Enclosures are connected from B port to A port, using the top EMMs.

Side B: Enclosures are connected from A port to B port, using the bottom EMMs.



Connect SC200/SC220 Enclosures

Dell Compellent 61

Single Controller, Single Enclosure, Low Profile SASThis illustration shows an SC8000 controller cabled to a 6 Gb SAS enclosure using a low

profile SAS IO card in a low profile card slot.

Figure 60. Single SC8000 Controller, Single SAS Enclosure, Low Profile SAS IO Card

Path High-Level Steps

Chain 1: Side A 1 Connect the first controller port 1 to the first enclosure, top EMM, port A.

2 Connect the remaining enclosures in series from B port to A port using the top

EMMs.

3 If the Storage Center has dual‐controllers, connect the last enclosure, top EMM,

port B to the second controller, port 3.

Chain 1: Side B 1 Connect the first controller port 3 to the last enclosure, bottom EMM, port B.

2 Connect the remaining enclosures in series from A port to B port using the

bottom EMM.

3 If the Storage Center has dual‐controllers, connect the top enclosure, bottom

EMM, port A to the second controller, port 1.

Note: The cabling illustrations in this chapter refer to enclosures as Enclosure 1, Enclosure 2, and so on. The numbers shown in the illustrations may not match the

Index number assigned by the System Manager. Storage Center assigns an Index

only after the system is powered up and at least one drive is assigned to a Disk

Folder.

Path Connections

Chain 1: A Side Controller: slot 3, port 1 → Enclosure: top EMM, port A.

Chain 1:

B

Side Controller: slot 3, port 3 → Enclosure: bottom EMM, port B.

4321

A

A B

B





Single Controller, Single EnclosureThis illustration shows an SC8000 controller cabled to a single SAS enclosure using a full‐height IO card.

Figure 61. Single SC8000 Controller, Single SAS Enclosure

Path Connections

Chain 1: A Side Controller: slot 6, port 1 → Enclosure: top EMM, port A.

Chain 1: B Side Controller: slot 6, port 3 → Enclosure: bottom EMM, port B.

4 3 2 1

A

A B

B




Dell Compellent 63

Single Controller, Four Enclosures, Single Chain, Low Profile SASThis illustration shows a single SC8000 controller cabled to four SAS enclosures using the

low profile SAS IO card in a low profile slot.

Figure 62. Single SC8000 Controller, Single SAS Chain, Low-profile SAS Card

Path Connections

Chain 1: A Side 1 Controller: slot 3, port 1 → Enclosure 1: top EMM, port A.

2 Enclosure 1: top EMM, port B → Enclosure 2: top EMM, port A.



Chain 1: B Side 1 Enclosure 1: bottom EMM, port B → Enclosure 2: bottom EMM, port A.

2 Enclosure 2: bottom EMM, port B → Enclosure 3: bottom EMM, port A.


4 Enclosure 4: bottom EMM, port B → Controller: slot 3, port 3.

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller 4 3 2 1

A

A B

B

A

A B

B

A

A B

B

A

A B

B





Single Controller, Four Enclosures, Single ChainThis illustration shows a single SC8000 controller cabled to four SAS enclosures.

Figure 63. Single SC8000 Controller, Single SAS Chain

Path Connections





Chain

1:

B

Side 1 Enclosure 1:

bottom

EMM,

port

B

→ Enclosure

2:

bottom

EMM,

port

A.




Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller 4 3 2 1

A

A B

B

A

A B

B

A

A B

B

A

A B

B




Dell Compellent 65

Single Controller, Four Enclosures, Two IO Cards, Two Chains, LowProfile SASThis illustration shows a single SC8000 controller cabled to four SAS enclosures in two

chains using low profile SAS IO cards in low profile card slots. When cabling a second

chain of enclosures, use a second IO card to improve redundancy.

Figure 64. Single SC8000 Controller, Four SAS Enclosures, Two IO Cards, Two Chains, Low-profileSAS

Path Connections





Chain 2:

A

Side 1 Controller: slot 2 port 3 → Enclosure 3: top EMM, port A.



2 Enclosure 4: bottom EMM, port B → Controller slot 3 port 1.

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller

A

A B

B

A

A B

B

A

A B

B

A

A B

B

4321





Single Controller, Four Enclosures, Two IO Cards, Two ChainsThis illustration shows a single SC8000 controller cabled to four SAS enclosures in two

chains. When cabling a second chain of enclosures, use a second IO card to improve

redundancy.

Figure 65. Single SC8000 Controller, Four SAS Enclosures, Two IO Cards, Two Chains

Path Connections








2 Enclosure 4: bottom EMM, port B → Controller slot 5, port 1.

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller 4 3 2 1

A

A B

B

A

A B

B

A

A B

B

A

A B

B

4 3 2 1




Dell Compellent 67

Dual Controllers, One Enclosure, Single Chain, Low Profile SASThis illustration shows two SC8000 controllers cabled to two 6 Gb enclosures using a low

profile SAS IO card in a low profile card slot and creating a single chain.

Figure 66. Dual SC8000 Controllers, One Enclosure, One Chain, Low Profile SAS

Note: In a single‐chain configuration, use SAS ports 2 (initiator) and 4 (target) to

create a redundant IPC connection. When you configure these ports using the IO

port wizard, set the port Purpose to Unknown.

Path Connections

IPC 1 Controller A: slot 3, port 2 → Controller B: slot 3, port 4.

2 Controller B: slot 3, port 2 → Controller A: slot 3, port 4.

Chain 1: A Side 1 Controller A: slot 3, port 1 → Enclosure: top EMM, port A.

2 Enclosure: top EMM, port B → Controller B: slot 3, port 3.

Chain 1: B Side 1 Controller B: slot 3, port 1 → Enclosure: bottom EMM, port A.

2 Enclosure: bottom EMM, port B → Controller A: slot 3, port 3.

Enclosure

Controller A

Controller B

A

A B

B

4321






Dell Compellent 69

Dual Controllers, Two Enclosures, Single Chain, Low Profile SASThis illustration shows two SC8000 controllers cabled to two 6 Gb enclosures using a low

profile SAS IO card in a low profile card slot and creating a single chain.

Figure 68. Dual SC8000 Controllers, Two Enclosures, One Chain, Low Profile SAS




Path Connections



Chain 1: A Side 1 Controller A: slot 3, port 1 → Enclosure 1: top EMM, port A.


3 Enclosure 2: top EMM, port B → Controller B: slot 3, port 3.

Chain 1: B Side 1 Controller B: slot 3, port 1 → Enclosure 1: bottom EMM, port A.


3 Enclosure 2: bottom EMM, port B → Controller A: slot 3, port 3.

Enclosure 1

Enclosure 2

Controller A

Controller B

4321

A

A B

B

A

A B

B





Dual Controllers, Two Enclosures, Single ChainThis illustration shows two SC8000 controllers cabled to two SAS enclosures forming a

single chain. In a single‐chain configuration, use SAS ports 2 (initiator) and 4 (target) to

create a redundant IPC connection. When you configure these ports using the IO port wizard, set the port Purpose to Unknown.

Figure 69. Dual SC8000 Controllers, Two Enclosures, One Chain

Path Connections







2 Enclosure 1:

bottom

EMM,

port

B

→ Enclosure 2:

bottom

EMM,

port

A.


Enclosure 1

Enclosure 2

Controller A

Controller B

4 3 2 1

A

A B

B

A

A B

B

4 3 2 1







Path Connections

Chain 1: A Side 1 Controller A: slot 2 port 1 → Enclosure 1: top EMM, port A.



Chain 1:

B

Side 1 Controller B:

slot

3 port

1 →

Enclosure 1:

bottom

EMM,

port

A.












Dell Compellent 73

Dual Controllers, Four Enclosures, Two ChainsThis illustration shows two SC8000 controllers cabled to two SAS enclosures. Each

enclosure is on a separate chain. When two chains are used, IPC is optional.

Figure 71. Dual SC8000 Controllers, Four Enclosures, Two Chains

Path Connections





2 Enclosure 1:

bottom

EMM,

port

B

→ Enclosure

2:

bottom

EMM,

port

A.





Controller A

Controller B

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

4 3 2 1

4 3 2 14 3 2 1

4 3 2 1

A B

A B

A B

A B

A B

A B

A B

A B





Dual Controllers, Eight Enclosures, Two ChainsThis illustration shows two SC8000 controllers cabled to eight 6 Gb enclosures using two

chains. To add redundancy with multiple IO cards, add a second SAS IO card. Create the

A‐side of each chain on the IO card in slot 6 and create the B‐side of each chain on the IO

card in slot 5. If an IO card, cable, enclosure, or controller fails, at least one side of a loop

continues operating. IPC is optional in this configuration.

Figure 72. Dual SC8000 Controllers, Eight Enclosures, Two Chains




Path Connections

IPC (Optional) Create IPC connections between both controllers on ports 2 and 4 of each IO card.


2 Starting with Enclosure 1, daisy‐chain the A side of Chain 1 by cabling: top

EMM, port B → next enclosure down: top EMM, port A.

3 Finish with Enclosure 4: top EMM, port B → Controller B: slot 6, port 3.

Path Connections

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller B

Controller A

Enclosure 5

Enclosure 6

Enclosure 7

Enclosure 8

4 3 2 14 3 2 1

4 3 2 1 4 3 2 1

A

A B

B

A

A B

B

A

A B

B

A

A B

B A

A B

B

A

A B

B

A

A B

B

A

A B

B



Connect SC280 Enclosures

Dell Compellent 75

Connect SC280 EnclosuresThis section shows common cabling between the SC8000 controller and SC280 SAS

enclosures. Locate the scenario that most closely matches the Storage Center you are


A cabling chain for the SC280 can contain up to two enclosures of 84 SAS drives each (168

drives total). Each chain must contain the same type of enclosures, such as all SC280. Do

not mix enclosure types in a chain.

Each SAS IO card supports up to two chains of enclosures. All enclosures attached to the

same SAS IO card must be running at 6 Gb.

SC280 enclosure chains are cabled as follows.

Side A: Enclosures are connected from B port to A port, using the left EMMs.

Side B: Enclosures are connected from A port to B port, using the right EMMs.

Chain 1: B Side 1 Controller A: slot 5, port 3 → Enclosure 4: bottom EMM, port B.

2 Starting with Enclosure 4, daisy‐chain the B side of Chain 1 by cabling: bottom

EMM, port A → next enclosure up: bottom EMM, port B.

3 Finish with Enclosure 1: bottom EMM, port A → Controller B: slot 5, port 1.

Chain 2:

A

Side 1 Controller A: slot 6, port 3 → Enclosure 5: top EMM, port A.


EMM, port B → next enclosure down: top EMM, port A.

3 Finish with Enclosure 8: top, port B → Controller B: slot 6, port 1.

Chain 2: B Side 1 Controller A: slot 5, port 1 → Enclosure 8: bottom EMM, port B.


EMM, port A → next enclosure up: bottom EMM, port B.

3 Finish with Enclosure 5: bottom, port A → Controller B: slot 5, port 3.

Path Connections


Chain 1: Side A 1 Connect controller port 1 to the first enclosure, left EMM , port C.

2 Connect the remaining enclosures in series from B port to A port using the left EMMs.

3 If the Storage Center has dual controllers, connect the last enclosure, left EMM , port C to the second controller, port 3.

Chain 1: Side B 1 Connect controller port 3 to the last enclosure, right EMM, port C.

2 Connect the remaining enclosures in series from B port to A port using the right EMM.

3 If the Storage Center has dual controllers, connect the top enclosure, right

EMM, port C to the second controller, port 1.


Index number assigned by the System Manager. Storage Center assigns an Index

only after the system is powered up and at least one drive is assigned to a Disk

Folder.





See Also

SAS Enclosure Cabling Guidelines on page 55

Single Controller, Single SC280 EnclosureThis illustration shows an SC8000 controller cabled to a single SC280 enclosure.

Figure 73. Single SC8000 Controller, Single SC280 Enclosure

Path Connections

Chain 1: A Side Controller: slot 3, port 1 → Enclosure: left EMM, port C.

Chain 1: B Side Controller: slot 3, port 3 → Enclosure: right EMM, port C.

A B

1 3 42

C A B C

4 3 2 1







Dual Controller, Single SC280 EnclosureThis illustration shows two SC8000 controllers cabled to one SC280 enclosure in a single

chain.

Figure 75. Dual SC8000 Controllers, One SC280 Enclosure, One Chain




Path Connections



Chain 1: A Side 1 Controller A: slot 3, port 1 → Enclosure: left EMM, port C.

2 Enclosure: left EMM, port B → Controller B: slot 3, port 3.

Chain 1: B Side 1 Controller B: slot 3, port 1 → Enclosure: right EMM, port C.

2 Enclosure: right EMM, port B → Controller A: slot 3, port 3.

Enclosure

Controller A

Controller B

A B

1 3 42

C A B C

1 3 42 4 3 2 1

4 3 2 1




Dell Compellent 79

Dual Controller, Two SC280 EnclosuresThis illustration shows two SC8000 controllers cabled to two SC280 enclosures in a single

chain.

Figure 76. Dual SC8000 Controllers, Two SC280 Enclosures, One Chain




Controller A

Controller B

Enclosure 1

Enclosure 2

A B

1 3 42

C A B C

1 3 42

A B C A B C

4 3 2 1

4 3 2 1





Path Connections



Chain 1: A Side 1 Controller A: slot 3, port 1 → Enclosure: 1 left EMM, port C.

2 Enclosure 1:

left

EMM,

port

B

→ Enclosure:

2 left

EMM,

port

A.

3 Enclosure 2: left EMM, port C → Controller B: slot 3, port 3.

Chain 1: B Side 1 Controller B: slot 3, port 1 → Enclosure: 1 right EMM, port C.

2 Enclosure 1: right EMM, port A → Enclosure: 2 right EMM, port B.

3 Enclosure 2: right EMM, port C → Controller A: slot 3, port 3.







Figure 77. Dual SC8000 Controllers, Mixed Enclosures, Two Chains

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller B

Controller A1 3 42

1 3 42

4 3 2 1

4 3 2 1




Dell Compellent 83

Path Connections

IPC (Optional) Create IPC connections between both controllers on ports 2 and 4 of each SAS IO card.

SC280 Enclosures

Chain 1:

A

Side 1 Controller A: slot 2, port 1 → Enclosure 1: left EMM, port C.

2 Enclosure 1 left EMM, port B → Enclosure 2: left EMM, port A.

3 Finish with Enclosure 2: left EMM, port C → Controller B: slot 2, port 3.

Chain 1: B Side 1 Controller B: slot 3, port 1 → Enclosure 1: right EMM, port C.

2 Enclosure 1 right EMM, port A → Enclosure 2: right EMM, port B.

3 Finish with Enclosure 2: right EMM, port C → Controller A: slot 3, port 3.

SC200/220 Enclosures


2 Enclosure 3 top EMM, port B → Enclosure 4: top EMM, port A.

3 Finish with Enclosure 4: top EMM, port B → Controller B: slot 2, port 1.

Chain 2:

B

Side 1 Controller A: slot 3, port 1 → Enclosure 4: bottom EMM, port B.

2 Enclosure 4 bottom EMM, port A → Enclosure 3: bottom EMM, port B.

3 Finish with Enclosure 3: bottom EMM, port A → Controller B: slot 3, port 3.





Connect EN-SASx6x12/24 EnclosuresThis section shows common cabling between the SC8000 controller and EN‐SASx6x12/24

SAS enclosures. Locate the scenario that most closely matches the Storage Center you are


A SAS cabling chain can contain up to 14 enclosures and up to 168 6 Gbps SAS drives. Each

chain must

contain

the

same

type

of

enclosures,

such

as

all

EN

‐SAS

x6x12/24.

Do

not

mix

enclosure types in a chain.

EN‐SASx6x12/24 SAS enclosure chains are cabled as follows.

Side A: Enclosures are connected from B port to A port, using the top SBBs.

Side B: Enclosures are connected from A port to B port, using the bottom SBBs.

See Also

SAS Enclosure Cabling Guidelines on page 55


Chain 1: Side A 1 Connect controller port 1 to the first enclosure, top SBB , port C.

2 Connect the remaining enclosures in series from B port to A port using the top

SBBs.

3 If the Storage Center has dual‐controllers, connect the last enclosure, top SBB ,

port C to the second controller, port 3.

Chain 1: Side B 1 Connect controller port 3 to the last enclosure, bottom SBB , port C.

2 Connect the remaining enclosures in series from B port to A port using the

bottom SBB.

3 If the Storage Center has dual‐controllers, connect the top enclosure, bottom

SBB , port C to the second controller, port 1.


Index number assigned by the System Manager. Storage Center which assigns an

Index only after the system is powered up and at least one drive is assigned to a Disk

Folder.







Connect EN-SASx6x12/24 Enclosures

Dell Compellent 87

Single Controller, Four Enclosures, Two IO Cards, Two ChainsThis illustration shows a single SC8000 controller cabled to four SAS enclosures in two

chains. When you add a second chain, you should also have a second IO card in the

controller.

Figure 80. Single SC8000 Controller, Four 6 Gb Enclosures, Two IO Cards, Two Chains

Path Connections

Chain 1: A Side 1 Controller: slot 6, port 1 → Enclosure 1: top SBB, port C.

2 Enclosure 1: top SBB, port B → Enclosure 2: top SBB, port A.

Chain 1: B Side 1 Enclosure 1: bottom SBB, port A → Enclosure 2: bottom SBB, port B.

2 Enclosure 2: bottom SBB, port C → Controller: slot 5, port 3.

Chain 2: A Side 1 Controller: slot 6, port 3 → Enclosure 3: top SBB, port C.


Chain 2:

B

Side 1 Enclosure 3: bottom SBB, port A → Enclosure 4: bottom SBB, port B.

2 Enclosure 4: bottom SBB, port C → Controller slot 5, port 1.

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller 4 3 2 14 3 2 1





Dual Controllers, Two Enclosures, Single ChainThis illustration shows two SC8000 controllers cabled to two SAS enclosures forming a

single chain. In a single‐chain configuration, use SAS ports 2 and 4 to create a redundant IPC connection. When you configure these ports using the IO port wizard, set the port Purpose to Unknown.

Figure 81. Dual SC8000 Controllers, Two Enclosures, One Chain

Path Connections



Chain 1: A Side 1 Controller A: slot 6, port 1 → Enclosure 1: top SBB, port C.


3 Enclosure 2: top SBB, port C → Controller B: slot 6, port 3.

Chain 1: B Side 1 Controller B: slot 6, port 1 → Enclosure 1: bottom SBB, port C.

2 Enclosure 1: bottom SBB, port A → Enclosure 2: bottom SBB, port B.

3 Enclosure 2: bottom SBB, port C → Controller A: slot 6, port 3.

Enclosure 1

Enclosure 2

Controller A

Controller B

4 3 2 1




Dell Compellent 89

Dual Controllers, Four Enclosures, Two Chains

This illustration shows two SC8000 controllers cabled to two SAS enclosures. Each

enclosure is on a separate chain. When two chains are used, IPC is optional.

Figure 82. Dual SC8000 Controllers, Two Enclosures, Two Chains

Path Connections




Chain 1: B Side 1 Controller A: slot 5, port 3 → Enclosure 2: bottom SBB, port C.

2 Enclosure 2: bottom SBB, port B → Enclosure 1: bottom SBB, port A.

3 Enclosure 1: bottom SBB, port C → Controller B: slot 5, port 1.

Chain 2: A Side 1 Controller A: slot 6 port 3 → Enclosure 3: top SBB, port C.



Chain 2: B Side 1 Controller A: slot 5 port 1→ Enclosure 4: bottom SBB, port C.

2 Enclosure 4: bottom SBB, port B → Enclosure 3: bottom SBB, port A.

3 Enclosure 3: bottom SBB, port C → Controller B: slot 5, port 3.

4 3 2 14 3 2 1Controller A

Controller B

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4





Dual Controllers, Four Enclosures, Single ChainThis illustration shows two SC8000 controllers with one SAS IO Card cabled to four SAS

enclosures. In a single‐chain configuration, use SAS ports 2 and 4 to create a redundant IPC

connection. When you configure these ports using the IO port wizard, set the port Purpose

to Unknown.

Figure 83. Dual SC8000 Controllers, Four Enclosures, One IO Card, One Chain

Path Connections




2 Enclosure 1, top SBB, port B → Enclosure 2, top SBB, port A.

3 Continue to daisy‐chain enclosures: top SBB, port B → next enclosure down: top SBB, port A.


Chain 1: B Side 1 Controller B: slot 6, port 1 → Enclosure 1: bottom SBB, port C.

2 Enclosure 1: bottom SBB, port A → Enclosure 2: bottom SBB, port B.

3 Continue to daisy‐chain enclosures: bottom SBB, port A → next enclosure

down: bottom SBB, port B.

4 Enclosure 4: bottom SBB, port C → Controller A: slot 6, port 3.

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller B

Controller A4 2 13




Dell Compellent 91

Dual Controllers, Eight Enclosures, Two Chains

This illustration shows two SC8000 controllers cabled to eight SAS enclosures in two

chains. To add redundancy with multiple IO cards, add a second SAS IO card. Create the

A‐sides of each chain on the IO card in slot 6 and create the B‐sides of each chain on the IO

card in slot 5. If an IO card, cable, enclosure, or controller fails, at least one side of a chain

continues operating. IPC is optional in this configuration.

Figure 84. Dual SC8000 Controllers, Eight Enclosures, Two Chains

Path Connections

IPC (Optional) Create IPC connections between both controllers on ports 2 and 4 of each IO card.



SBB, port B → next enclosure down: top SBB, port A.

3 Finish with Enclosure 4: top SBB, port C ? Controller B: slot 6, port 3.

Chain 1: B Side 1 Controller A: slot 5, port 3 → Enclosure 4: bottom SBB, port C.


SBB, port B → next enclosure up: bottom SBB, port A.

3 Finish with Enclosure 1: bottom SBB, port C → Controller B: slot 5, port 1.

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller

Controller A

Enclosure 5

Enclosure 6

Enclosure 7

Enclosure 8

4 2 13

4 2 13





Chain 2: A Side 1 Controller A: slot 6, port 3→ Enclosure 5: top SBB, port C.


SBB, port B → next enclosure down: top SBB, port A.

3 Finish with Enclosure 8: top SBB, port C ? Controller B: slot 6, port 1.

Chain 2:

B

Side 1 Controller A: slot 5, port 1 → Enclosure 8: bottom SBB, port C.


SBB, port B → next enclosure up: bottom SBB, port A.

3 Finish with Enclosure 5: bottom SBB, port C → Controller B: slot 5, port 3.

Path Connections



Label the Back-End Cables

Dell Compellent 93

Label the Back-End CablesLabel the back‐end cables that connect controllers to enclosures to indicate the chain

number and side (A or B). Pre‐made labels are provided for SC200/220 enclosures. Labels are not provided for EN‐SASx6x12/24 enclosures, so labels must be created manually for cables that connect to those enclosures.

Prerequisites

If the Storage Center has EN‐SASx6x12/24 enclosures, you must have a label maker, or four

blank labels and a writing utensil.

Steps

1 Locate or create labels for the back‐end cables.

EN‐SASx6x12/24 enclosures: Create labels that label the purpose (Backend), chain

number, and side (A or B).

Example: Backend 1A

SC200/220 enclosures: Locate the back‐end cable labels that shipped with the

enclosures. The pre‐made labels include the purpose (Backend), chain number, and

side (A or B).

Figure 85. SC200/220 Back-End Cable Label

Note: Cables that connect one enclosure to another do not need to be labeled.





2 Apply cable labels to both ends of each SAS cable that connects a controller to an

enclosure.

a Near the connector, align the label perpendicular to the cable and affix it starting



b Wrap the label around the cable until it fully encircles the cable. The bottom of each



c Apply a matching label to the other end of the cable.



Dell Compellent 95

4 Connect the Front End

Front‐end cabling refers to connections between the controller and the server. Front‐end

connections can be made using iSCSI, Fibre Channel, or Fibre Channel over Ethernet (FCoE). Dell Compellent recommends connecting servers to the controller(s) using the

most redundant options available.

Contents

Types of

Redundancy

for

Front

‐End

Connections .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

95Multipath IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Front‐End Connectivity Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Fibre Channel Zoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Connect the Front End for a Single‐Controller Storage Center . . . . . . . . . . . . . . . . . . . . 103

Connect the Front End for a Dual‐Controller Storage Center . . . . . . . . . . . . . . . . . . . . . 105

Label the Front‐End Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Types of Redundancy for Front-End ConnectionsFront‐end redundancy is achieved by eliminating single points of failure that could cause

a server to lose connectivity to the Storage Center.

Depending on how the Storage Center is configured, the following types of redundancy

are available.

Path redundancy: When multiple paths are available from a server to a Storage Center, a server configured for multipath IO (MPIO) can use multiple paths for IO. If a path

fails, the server continues to use the remaining active path(s).

Controller redundancy: If one controller fails in a dual‐controller Storage Center, the

front‐end ports fail over to the functioning controller. Both front‐end connectivity

modes (legacy mode and virtual port mode) provide controller redundancy.

Port redundancy: In virtual port mode, if a port goes down because it is disconnected

or there is a hardware failure, the port can fail over to another functioning port in the

same fault domain. Port redundancy is available for single‐controller and dual‐controller Storage Centers operating in virtual port mode.

See Also

Multipath IO on page 96

Legacy Mode on page 99

Virtual Port Mode on page 97





Front-End Connectivity Modes

Dell Compellent 97

Virtual Port ModeVirtual port mode provides port and controller redundancy by connecting multiple active

ports to each Fibre Channel or Ethernet switch.

In virtual port mode, each physical port has a WWN (World Wide Name), and is also

assigned an additional virtual WWN. Servers target only the virtual WWNs. During

normal conditions, all ports process IO. If a port or controller fails, a virtual WWN can be

moved to another physical WWN in the same fault domain. When the failure is resolved

and ports are rebalanced, the virtual port returns to the preferred physical port.

Virtual port mode provides the following advantages over legacy mode:

Increased performance: Because all ports are active, additional front‐end bandwidth is available without sacrificing redundancy.

Improved redundancy: Ports can fail over individually instead of by controller.

Simplified

iSCSI

configuration:

Each

fault

domain

has

an

iSCSI

control

port

that

coordinates discovery of the iSCSI ports in the domain. When a server targets the iSCSI port IP address, it automatically discovers all ports in the fault domain.

Fault Domains in Virtual Port Mode

Fault domains group front‐end ports that are connected to the same Fibre Channel fabric

or Ethernet network. Ports that belong to the same fault domain can fail over to each other because they have the same connectivity.

The following requirements apply to fault domains in virtual port mode:

A separate fault domain must be created for each front‐end Fibre Channel fabric or Ethernet network.

A

fault

domain

must

contain

a

single

type

of

transport

media

(FC

or

iSCSI,

but

not

both).

Dell Compellent recommends configuring at least two connections from each controller to each Fibre Channel or Ethernet network (fault domain).

Requirements for Virtual Port Mode

The following requirements must be met to configure a Storage Center in virtual port mode.

Note: Dell Compellent strongly recommends using virtual port mode unless the

network environment does not meet the requirements for virtual port mode.

Requirement Description

License The Storage Center must be licensed for virtual port mode.

Switches Front‐

end

ports

must

be

connected

to

Fibre

Channel

or

Ethernet

switches;

servers cannot be directly connected to controller front‐end ports.



Chapter 4 Connect the Front End


See Also

Fibre Channel Zoning on page 102

Example Virtual Port Mode ConfigurationThe following figure shows a dual‐controller Storage Center in virtual port mode

connected to a Fibre Channel server with a single fault domain. All ports belong to a single

fault domain because they are connected to the same FC switch.

Figure 88. Virtual Ports Example with FC

The following table summarizes the failover behaviors for this configuration.

Multipathing If multiple active paths are available to a server, the server must be

configured for MPIO to use more than one path simultaneously.

iSCSI networks • NAT must be disabled for iSCSI replication traffic.

• CHAP authentication must be disabled.

Fibre Channel fabrics • The FC topology must be switched fabric. Point‐to‐point and arbitrated

loop topologies are not supported.

• FC switches must be zoned to meet the virtual port mode zoning

requirements.

• FC switches must support N_Port ID Virtualization (NPIV).

• Persistent FCID must be disabled on FC switches.

Note: AIX servers are not supported.

Note: To use both primary paths simultaneously, the server must be configured to

use MPIO.

Scenario Failover Behavior

Normal operating conditions All ports are active and pass IO.

Controller A fails Virtual ports on controller A fail over by moving to physical ports on controller B.

Controller B fails Virtual ports on controller B fail over by moving to physical ports on

controller A.

A single port fails The virtual port associated with the failed physical port moves to

another physical port in the fault domain.

Requirement Description

FC Switch

Server

Controller A Controller B

Active Ports




Dell Compellent 99

Legacy ModeLegacy mode provides controller redundancy for a dual‐controller Storage Center by

connecting multiple primary and reserved ports to each Fibre Channel or Ethernet switch.

In legacy mode, each primary port on a controller is paired with a corresponding reserved

port on the other controller. During normal conditions, the primary ports process IO and

the reserved

ports

are

in

standby

mode.

If

a controller

fails,

the

primary

ports

fail

over

to

the corresponding reserved ports on the other controller. This approach ensures that servers connected to the switch do not lose connectivity if one of the controllers fails. For optimal performance, the primary ports should be evenly distributed across both

controllers. When possible, front‐end connections should be made to separate controller IO

cards to improve redundancy.

Fault Domains in Legacy Mode

Each pair of primary and reserved ports is grouped into a fault domain in the Storage

Center software. The fault domain determines which ports are allowed to fail over to each

other.

The following requirements apply to fault domains in legacy mode on a dual‐controller

Storage Center:

A fault domain must contain a one type of transport media (FC or iSCSI, but not both).

A fault domain must contain one primary port and one reserved port.

The reserved port must be located on a different controller than the primary port.

Requirements for Legacy Mode

The following requirements must be met to configure a Storage Center in legacy mode.

See Also


Note: For a single‐controller Storage Center, only one fault domain is required for each transport type (FC or iSCSI) because there are no reserved ports.

Requirement DescriptionController front‐end

portsEach controller must have enough front‐end ports to connect two paths to

each Fibre Channel or Ethernet switch.

Multipathing If multiple active paths are available to a server, the server must be

configured for MPIO to use more than one path simultaneously.

Fibre Channel zoning FC switches must be zoned to meet the legacy mode zoning requirements.





Example Legacy Mode Configuration

The following figure shows a dual‐controller Storage Center in legacy mode connected to

a Fibre Channel server with two fault domains. Fault domain 1 (shown in orange) is

comprised of primary port P1 on controller A and reserved port R1 on controller B. Fault domain 2 (shown in green) is comprised of primary port P2 on controller B and reserved

port R2 on controller A.

Figure 89. Legacy Mode Example with FC

The following table summarizes the failover behaviors for this configuration.

Note: To use multiple paths simultaneously, the server must be configured to use

MPIO.

Scenario Failover Behavior

Normal operating conditions • Primary ports P1 and P2 (both fault domains) pass IO.

• Reserved ports R1 and R2 remain in a standby mode until a

controller failure.

Controller A fails In fault domain 1, primary port P1 fails over to reserved port R1.

Controller B fails In fault domain 2, primary port P2 fails over to reserved port R2.

A single port fails The port does not fail over because there was no controller failure. If a second path is available, MPIO software on the server provides fault tolerance by sending IO to the functioning port in the other fault domain.

Controller A

FC Switch

Server

Controller B

Primary Port — P2

Primary Port — P1 Reserved Port — R1

Reserved Port — R2




Dell Compellent 101

Failover Behavior for Legacy Mode and Virtual Port ModeLegacy mode and virtual port mode behave differently during failure conditions because

they use different mechanisms to provide fault tolerance.

Scenario Virtual Port Mode Legacy Mode

Normal

operating

conditions All

ports

are

active

and

pass

IO. • Primary

ports

pass

IO.• Reserved ports remain in a

standby mode until a

controller failure.

A controller fails in a dual‐controller Storage Center

Virtual ports on the failed

controller move to physical ports on the functioning controller.

Primary ports on the failed

controller fail over to reserved

ports on the functioning

controller.

A single port fails (single‐ or dual‐controller Storage

Center)

An individual port fails over to

another port in the fault domain.The port does not fail over because there was no controller failure. If a second path is available, MPIO software on the

server provides fault tolerance.

Note: In Legacy mode, reserve ports and primary ports reside on separate

controllers, providing controller‐level failover only. Legacy mode does not provide

port‐level failover.





Fibre Channel ZoningWhen using Fibre Channel for front‐end connectivity, zones must be established to ensure

that storage is visible to the servers. Plan the front end connectivity using zoning concepts discussed in this section before starting to cable the controller.

Zoning can be applied to either the ports on switches or to the World Wide Names (WWNs)

of the

end

devices.

Zones

should

be

created

using

a single

initiator

(using

physical

WWNs)

and multiple targets (using virtual WWNs).

In a dual‐controller configuration, the virtual WWNs from each controller must be

included in the zone with each host’s WWN.

WWN Zoning GuidelinesWhen WWN zoning is configured, a device may reside on any port or change physical ports and still be visible because the switch is seeking a WWN.

Port Zoning GuidelinesWhen port zoning is configured, only specific switch ports are visible. If a storage device is

moved to a different port that is not part of the zone, it is no longer visible to the other ports in the zone.

Note: For virtual port mode, WWN zoning is recommended.

Connectivity Type GuidelinesLegacy mode • Include all Storage Center front‐end WWNs or ports in a single

zone.

• Create server zones that contain a single initiator and multiple

targets, and which include the server HBA WWN.

Virtual port mode • Include all Storage Center virtual WWNs in a single zone.

• Include all Storage Center physical WWNs in a single zone.

• Create server zones that contain a single initiator and multiple

targets (Storage Center virtual WWNs), and which include the

server HBA WWN.

Fibre Channel replication • Include all Storage Center physical WWNs from System A and B

in

a

single

zone.• Include all Storage Center physical WWNs of System A and the

virtual WWNs of System B on the particular Fabric.

• Include all Storage Center physical WWNs of System B and the

virtual WWNs of System A on the particular Fabric.

Note: Some ports may not be used or dedicated for replication, however ports that are used must be in these zones.

Connectivity Type Guidelines

Legacy mode or virtual port mode

• Include all Storage Center front‐end ports.

• Create server zones which contain all Storage Center front‐end

ports and a single server port.

Fibre Channel replication Include all Storage Center front‐end ports from System A and

System B in a single zone.



Connect the Front End for a Single-Controller Storage Center

Dell Compellent 103

Connect the Front End for a Single-Controller Storage CenterUse Fibre Channel and iSCSI to connect servers to the Storage Center. For each transport type, choose a front‐end connectivity mode (legacy mode or virtual port mode), and then

connect the servers in a way that meets the requirements of the chosen connectivity mode. Apply cable labels to both ends of each cable.

Connect Servers to a Single Controller with No RedundancyConnect servers without using redundancy if the controller does not have enough front‐end ports to allow redundant paths to each FC fabric, directly connected FC server, and

Ethernet switch.

Prerequisites

The controller must have an available front‐end port for each FC fabric, Ethernet switch

(iSCSI network), and standalone FC server that you want to directly connect.

Steps

1 Connect the FC fabrics.

a Connect a controller FC port to each FC fabric.

b Connect one or more FC servers to each FC fabric.

c Configure FC zoning to meet the zoning requirements.

If you are planning to configure FC in legacy mode, configure zoning to meet the

legacy mode zoning requirements.

If you are planning to configure FC in virtual port mode, configure zoning to

meet the virtual port mode zoning requirements.

2 Connect the iSCSI networks.

a Connect a controller iSCSI port to each iSCSI network.

b Connect one or more iSCSI servers to each iSCSI network.

3 During the software setup process, configure fault domains based on the connectivity

mode:

Legacy mode: Create one fault domain for each transport type (FC and iSCSI).

Virtual port mode: Create one fault domain for each fabric or directly connected FC

server.

Note: The cabling instructions and diagrams in this section are valid for a particular IO card configuration. If the controllers you are installing contain different IO cards, adjust the cabling accordingly.

Note: iSCSI servers must be connected to Ethernet switches. An iSCSI server cannot be directly connected to a front‐end iSCSI port on the controller.









Prerequisites

Each controller

must

have

two

available

FC

front

‐end

ports.

Steps

1 Connect each FC server to both FC fabrics.

2 Connect fault domain 1 (shown in orange) to fabric 1.

Primary port P1: Controller A, slot 1, port 1 → Fabric 1

Reserved port R1: Controller B, slot 1, port 1 → Fabric 1

3 Connect fault domain 2 (shown in blue) to fabric 1.

Primary port P2: Controller B, slot 2, port 1 → Fabric 1

Reserved port R2: Controller A, slot 2, port 1 → Fabric 1

4 Configure FC zoning to meet the legacy mode zoning requirements.

Figure 92. Dual-controller with Single-Fabric FC in Legacy Mode

See Also


Note: To prevent a port or cable failure from blocking access to volumes mapped to

a controller, connect two additional fault domains so that each controller has two

primary paths to the FC fabric.

P1

R2

P2

R1

Controller A

Fabric 1

Server 1

Controller B

Server 2

1 2

1 2



Connect the Front End for a Dual-Controller Storage Center

Dell Compellent 107

Legacy Mode with Dual-Fabric Fibre Channel

Use two fabrics with legacy mode to prevent a FC switch failure or controller failure from

causing an outage.

In this configuration, four fault domains are spread across both controllers. Each fault domain contains sets of primary and reserve paths (P1‐R1, P2‐R2, P3‐R3, and P4‐R4). To

provide redundancy, the primary port and the corresponding reserve port in a fault domain must connect to the same fabric. When MPIO is configured on the FC servers, the

primary paths provide redundancy for a single port or cable failure. The reserved paths provide redundancy for single controller failure.

Prerequisites

Each controller must have two available FC front‐end ports for each FC fabric.

Steps

1 Connect each FC server to both FC fabrics.







4 Connect fault domain 3 (shown in green) to fabric 2.



5 Connect fault domain 4 (shown in purple) to fabric 2.








Figure 93. Dual-controller with Dual-Fabric FC in Legacy Mode

See Also


Virtual Port Mode with Single-Fabric Fibre Channel

Connect virtual port mode Fibre Channel to a single fabric if only one FC is available and

you want to protect against port or controller failure.

In this configuration, there is one fault domain because there is a single FC fabric. Each

controller is connected to the fabric by at least two FC connections to provide port redundancy. If a single port fails, its virtual port fails over to another port. If a controller

fails, the virtual ports on the failed controller move to ports on the other controller. This

configuration is vulnerable to switch failure.

Prerequisites

Each controller must have two available FC front‐end ports.

The requirements for virtual port mode must be met.

Steps

1 Connect each server to the FC fabric.


Controller A, slot 1, port 1 → Fabric 1


Controller B, slot 1, port 1 → Fabric 1

R4

P1

R2 P3

P2

R1 P4 R3

Controller A

Fabric 1

Server 1

Controller B

Server 2

Fabric 2

1 2

1 2




Dell Compellent 109



Figure 94. Dual-controller with Single-Fabric FC in Virtual Port Mode

See Also

Requirements for Virtual Port Mode on page 97


Controller B

Fabric 1

Server 1

Controller A

Server 2

1 2

1 2





Virtual Port Mode with Dual-Fabric Fibre Channel

Use two fabrics with virtual port mode to prevent a FC switch failure or controller failure

from causing an outage.

In this configuration, there is one fault domain for each FC fabric. Each controller is

connected to both fabrics by two FC connections. If a single port fails, its virtual port fails over to another port in the same fault domain. If a controller fails, the virtual ports on the

failed controller move to ports on the other controller in the same fault domain.

Prerequisites

Each controller must have two available FC front‐end ports for each FC fabric.


Steps

1 Connect each server to both FC fabrics.




Controller B, slot 1, port 1 → Fabric 1 Controller B, slot 2, port 1 → Fabric 1







Figure 95. Dual-controller with Dual-Fabric FC in Virtual Port Mode

Controller B

Fabric 1

Server 1

Controller A

Server 2

Fabric 2

1 2

1 2




Dell Compellent 111

See Also

Requirements for Virtual Port Mode on page 97


Connect iSCSI Servers

Choose the iSCSI connectivity option that best suits the front‐end redundancy

requirements and network infrastructure.

Legacy Mode with Single‐Network iSCSI on page 111

Legacy Mode with Dual‐Network iSCSI on page 112

Virtual Port Mode with Single‐Network iSCSI on page 114

Virtual Port Mode with Dual‐Network iSCSI on page 115

Legacy Mode with Single-Network iSCSI

Connect legacy mode iSCSI to a single network if only one Ethernet switch is available and

you want to protect against controller failure.

In this

configuration,

two

fault

domains

are

spread

across

both

controllers.

Each

fault

domain contains sets of primary and reserve paths (P1‐R1 and P2‐R2). The reserved paths provide redundancy for single controller failure. This configuration is vulnerable to switch

failure.

Prerequisites

Each controller must have two available iSCSI front‐end ports.

Steps

1 Connect each iSCSI server to both Ethernet switches.2 Connect fault domain 1 (shown in orange) to switch 1.

Primary port P1: Controller A, slot 3, port 1 → Switch 1

Reserved port R1: Controller B, slot 3, port 1 → Switch 1

3 Connect fault domain 2 (shown in blue) to switch 1.

Primary port P2: Controller B, slot 4, port 2 → Switch 1

Reserved port R2: Controller A, slot 4, port 2 → Switch 1

Note: To prevent a port or cable failure from blocking access to volumes mapped to

a controller, connect two additional fault domains so that each controller has two

primary paths to the iSCSI network.






Dell Compellent 113

3 Connect fault domain 2 (shown in blue) to switch 1.



4 Connect fault domain 3 (shown in green) to switch 2.

Primary port P3: Controller A, slot 4, port 1 → Switch 2

Reserved port

R3: Controller B, slot 4, port 1 → Switch 2

5 Connect fault domain 4 (shown in purple) to switch 2.



Figure 97. Dual-controller with Dual-Network iSCSI in Legacy Mode

Ethernet Switch 1

iSCSI Network 1

Server

Ethernet Switch 2

iSCSI Network 2

Controller B

Controller A

R3 P4R4 P3P1 P2R1 R2

4 3 2 1

4 3 2 1

1 2

1 2

2 1

2 1





Virtual Port Mode with Single-Network iSCSI

Connect virtual port mode iSCSI to a single network if only one Ethernet switch is available

and you want to protect against port or controller failure.

In this configuration, there is one fault domain because there is a single network. Each

controller is connected to the fabric by at least two iSCSI connections to provide port redundancy. If a single port fails, its virtual port fails over to another port. If a controller

fails, the virtual ports on the failed controller move to ports on the other controller. This

configuration is vulnerable to switch failure.

Prerequisites

Each controller must have two available iSCSI front‐end ports.


Steps

1 Connect each server to the iSCSI network.

2 Connect fault domain 1 (shown in orange) to iSCSI network 1.

Controller A, slot 3, port 1 → Switch 1

Controller B,

slot

3,

port

1 →

Switch 1

Controller B, slot 4, port 2 → Switch 1


Figure 98. Dual-Controller with Single-Network iSCSI in Virtual Port Mode

Ethernet Switch 1

iSCSI Network 1

Server

Controller B

Controller A 4 3 2 1

4 3 2 1

1 2

1 2

2 1

2 1




Dell Compellent 115

Virtual Port Mode with Dual-Network iSCSI

Use two networks with virtual port mode to prevent an Ethernet switch failure or controller failure from causing an outage.

In this configuration, there is one fault domain for each iSCSI network. Each controller is connected to both Ethernet networks by two iSCSI connections. If a single port fails, its

virtual port fails over to another port in the same fault domain. If a controller fails, the

virtual ports on the failed controller move to ports on the other controller in the same fault domain.

Prerequisites

Each controller must have two available iSCSI front‐end ports for each iSCSI network.


Steps

1 Connect each iSCSI server to both Ethernet switches.

2 Connect fault domain 1 (shown in orange) to iSCSI network 1.


Controller B,

slot

3,

port

1 →

Switch 1



3 Connect fault domain 2 (shown in purple) to iSCSI network 2.









Figure 99. Dual-Controller with Dual-Network iSCSI in Virtual Port Mode

Label the Front-End CablesLabel the front‐end cables to indicate which controller they are connected to, as well as the

controller slot and port. Pre‐made labels are shipped with SC8000 controllers.

1 Locate the pre‐made front‐end cables that shipped with the controller(s).

Figure 100. Front-End Cable Label

Ethernet Switch 1

iSCSI Network 1

Server

Ethernet Switch 2

iSCSI Network 2

Controller B

Controller A 4 3 2 1

4 3 2 1

1 2

1 2

2 1

2 1



Label the Front-End Cables

Dell Compellent 117

2 Apply cable labels to both ends of each iSCSI cable that connects a controller to a front‐end switch.

a Prepare two labels by writing the controller number, slot, and port that the cable is

connected to.












3 Apply cable labels to both ends of each FC cable that connects a controller a front‐end

fabric or server.

a Prepare two labels by writing the controller number, slot, and port that the cable is

connected to.

b Near the connector, align the dotted line on the label with the edge of the cable and

affix it starting with the top edge of the label.








Dell Compellent 119

5 Set up the Storage Center Software

Connect the Storage Center management interfaces and configure the Storage Center

software.

ContentsPrerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Connect the Ethernet Management and iDRAC Interfaces . . . . . . . . . . . . . . . . . . . . . . . 121

Turn on the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Configure the Controller(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Verify Software Support for Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Start the Storage Center Startup Wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Complete the Startup Wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Label SC200 and SC220 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

PrerequisitesBefore the Storage Center software can be configured, the hardware must be connected,

and you

must

have

the

required

materials

and

documents.

Hardware ConfigurationAll hardware must be installed and cabled before beginning the software setup process. If server connectivity is through Fibre Channel (FC), the FC switches must be configured and

zoned before configureing the controller(s).



Chapter 5 Set up the Storage Center Software


Required MaterialsRemote connections to the Storage Center are required during different stages of configuration.

Make sure that you have the items listed in the following table.

Required DocumentsA Storage Architect or Business Partner designed the components of Storage Center for the

specific site. Pre‐installation documentation contains detailed information from the design

that is used during the setup process.

Pre‐installation documents include:

List of hardware needed to support storage requirements

Hardware Serial Number (HSN) and System Serial Number (SSN) used to configure the

controller(s)

Optional connectivity

diagrams

to

illustrate

cabling

between

the

controllers,

enclosures, switches, and servers

Optional network information, such as IP addresses, subnet masks, gateways

Refer to these documents for information about site‐specific settings used during controller configuration.

Required Software VersionsStorage Center hardware has minimum software version requirements.

Required Item Purpose

RS‐232 serial cable and PC or laptop

Used to run commands and view console messages during

controller configuration.

Computer connected to the

same network as the Storage

Center

Used to connect to the Storage Center System Manager (through a

web browser) to complete the Storage Center configuration.

Storage Center license file Used to activate purchased features.

License files use the naming convention snxxx_35_date.lic, where:

• sn xxx is the serial number of the Storage Center.

• 35 indicates that the system runs software higher than version 3.5.

• date shows the license generation date in YYMMDD format.

• .lic is the file extension.

Hardware Minimum Software Version

SC8000 (controller) 6.1.2

SC200/220 (enclosures) 6.2.1

SC280 (enclosures) 6.4.1



Connect the Ethernet Management and iDRAC Interfaces

Dell Compellent 121

Connect the Ethernet Management and iDRAC InterfacesThe iDRAC and Ethernet management ports must be connected to a management network.

The ETH 0 port supports system login and access to the management software. It is also

used to send email, alerts, SNMP traps, and system data using Phone Home.

The iDRAC connection provides access to the controller for system information and

diagnostics.

Connect Single-Controller Management PortsConnect the controller Ethernet management and iDRAC ports to a management network.

1 Connect the 1 Gb ETH 0 (port 0) to an Ethernet switch.

2 Connect the iDRAC port to the Ethernet switch using a 1 Gb Ethernet cable.

Figure 105. Single Controller Management Connections

Switch (Corporate/Public Network)

Controller

1 Gb ETH 0 Port

iDRAC

31 20

IPC MGMT





Connect Dual-Controller Management PortsConnect Ethernet management and iDRAC ports for both controllers to a management network.

1 Connect the 1 Gb ETH 0 (port 0) on each controller to an Ethernet switch or VLAN.

2 Connect the iDRAC port to the same Ethernet switch using a 1 Gb Ethernet cable.

Figure 106. Dual-Controller Management Connections

Label the Management CablesLabel the Ethernet management cables and iDRAC cables with the pre‐made labels that shipped with the controller(s).

1 Locate the Ethernet management and iDRAC labels that shipped with the controller(s).

Figure 107. Management Cable Label

Switch (Corporate/Public Network)

Controller A

Controller B

1 Gb ETH 0 Port

1 Gb ETH 0 PortiDRAC

iDRAC

31 20

IPC MGMT

31 20

IPC MGMT



Connect the Ethernet Management and iDRAC Interfaces

Dell Compellent 123

2 Label both ends of each Ethernet cable with the appropriate management or iDRAC

label.

a Near the connector, align the label perpendicular to the cable and affix it starting



b Wrap the label around the cable until it fully encircles the cable. The bottom of each



c Apply a matching label to the other end of the cable.





Turn on the HardwareTurn on the enclosures first, and after the disks spin up, turn on the controllers.

1 Connect the enclosures and controller(s) to a power source.

2 Turn on each enclosure attached to the Storage Center.

a Simultaneously press both power switches on the rear of the enclosure to turn on the

enclosure.

b Repeat with each enclosure attached to the Storage Center, waiting for the disks to

spin up between enclosures.

3 Turn on each controller by pressing and holding the power button on the front of the

controller. The fans turn on as an indication that the controller is starting to come up.

Configure the Controller(s)Use a serial connection to the controller(s) to set the initial configuration.

Reset Hardware and System Serial NumbersConfigure the controller(s) with the HSN and SSN provided in the pre‐installation

documents.

1 Establish a serial connection to the controller.

a Use an RS‐232 serial cable to connect a PC or laptop to a Storage Center controller’s

RS‐232

serial

port.

(To

connect

from

a USB

port,

use

a USB

to

RS

‐232

converter.)

b Turn on the PC.

c Open a terminal emulator or a command‐line interface. Configure the connection as

shown in the following table.

Note: Make sure that all disks are up and spinning at full speed before turning

on any controllers.

Note: If configuring a dual‐controller Storage Center, perform this task for both

controllers. Use the lowest serial number for Controller 1.

Setting Value

Emulation VT220

Column Mode 132

Line Wrapping Off

Connection Serial Port

Connection Type Direct

Baud Rate 115,200

Parity None

Data Bits 8

Stop Bits 1

Flow Control Hardware or default



Configure the Controller(s)

Dell Compellent 125

d Press the Enter key several times to initiate the connection. The terminal echoes back

to indicate that connectivity has been established. If the prompt (>) is not displayed, see Troubleshooting the Serial Connection on page 205.

2 Set the HSN and SSN using the SSN(s) provided in the pre‐installation documents.

Controller 1: Set the HSN and SSN to the lower SSN.

shellaccess developer

platform init hsn set [lower SSN ] platform init ssn set [lower SSN ]cs purge all

-reset

Controller 2:

(Dual

‐controller

only)

Set

the

HSN

and

SSN

to

the

higher

SSN.

shellaccess developer

platform init hsn set [higher SSN ] platform init ssn set [higher SSN ]cs purge all

-reset

The controller takes several minutes to reboot. The controller may reboot more than

once — this is normal.

3 When the reboot is complete, verify that the table that is displayed ends with:

2 1 Finish

4 Verify the new settings by running the controller show command.

5 Record the factory default eth1 address. For dual‐controller Storage Centers, the eth1

address from Controller 2 is needed during the setup process.

Set Controller IP AddressesStorage Center controllers use static IP addresses. Configure an IP address for the

management interface (eth0), specify one or more DNS servers, and set the domain name

to which the Storage Center belongs.

eth0 supports system login and access for the software. It is used to send emails, alerts,

SNMP traps, and Phone Home data.

eth1 is used for dedicated Inter‐Process Communication (IPC) between controllers in a

dual‐controller Storage Center. Because eth1 is directly connected to the other controller, no default gateway is required.

Do not change the eth1 address unless both controllers were factory configured with the

same address or the customer requests the change. The eth1 address cannot reside in

the same subnet as eth0.

Note: To facilitate troubleshooting, enable logging for the session.

Caution: The following commands are for new installations only. Running the

cs purge all command on an existing Storage Center controller deletes the

existing configuration and can make data inaccessible.

Note: Although entered in decimal, the new HSN and SSN values are returned

in hexadecimal.





1 Run the following command to configure the management interface (etho).

controller ipconfig eth0 [IP address] [netmask ] [gateway ]

Example:controller ipconfig eth0 172.31.1.101 255.255.0.0 172.31.0.1

2 Run the following command to specify one or more DNS servers.

controller dnsserver [DNS server 1 IP address] [DNS server 2 IP address]

Example:

controller dnsserver 172.31.0.50 172.31.0.60

3 Run the following command to specify the domain to which the Storage Center belongs.

controller domainname [domain name]

Example:

controller domainname corp.dom

4 Verify the changes to the network settings by running the following command:controller show

Manage the iDRAC IP AddressThe SC8000 controller includes the Integrated Dell Remote Access Controller (iDRAC7) that is factory configured for Dynamic Host Configuration Protocol (DHCP). The iDRAC

can be left with the original configuration or it can be assigned a static IP address.

To see if the iDRAC is set to use a static IP address or DHCP, run the following

command:

platform bmc get source

To see what IP address is assigned to the iDRAC, run the following command:

platform bmc show

To set the iDRAC to a static IP address, run the following commands:

platform bmc set ip [IP address]

platform bmc set netmask [netmask ]

platform bmc set gateway [gateway]

Example:

platform bmc set ip 10.0.0.12

platform bmc set netmask 255.255.255.0

platform bmc set gateway 10.0.0.1

To set the iDRAC to use DHCP, run the following command:

platform bmc set source DHCP

Note that DHCP must be entered in all caps.

Note: If configuring a dual‐controller Storage Center, perform this task for both

controllers.

Note: To use the iDRAC in a non‐DHCP environment, a static IP address must be

set.

Note: On a dual‐controller Storage Center, change the iDRAC IP address on

both SC8000 controllers.



Verify Software Support for Enclosures

Dell Compellent 127

Verify Software Support for EnclosuresIf the Storage Center has one or more SC200/220 or SC280 enclosures, use the command‐

line interface to verify that the controller is running the correct Storage Center OS version. If necessary, upgrade the controllers to a version that supports the enclosures.

1 At the command line, run the command controller show.

2 In the output of the command, find the three Version columns.

In the example above, the controller is running Storage Center OS 6.4.1.

3 If the controller is running a version older than the minimum version specified below, upgrade Storage Center OS to the minimum version or later.

a Use a web browser to connect to the management IP of the controller. The Storage

Center Startup Wizard appears.

b Accept the license agreement, then close the Startup Wizard.

c Update Storage Center OS to the latest version.

If the Storage Center has internet connectivity, use the System Manager to

download and install the latest Storage Center OS. For instructions, see the

Storage

Center

Software

Update

Guide.

If the Storage Center does not have internet connectivity, use the Storage Center Maintenance CD to perform the upgrade. See the Storage Center Maintenance

CD

Instructions document for details.

4 After updating the Storage Center OS, check for additional updates again. Enclosure

firmware updates may not install with the OS update, since Storage Center does not recognize some new hardware until after the OS is installed.

Check the Update Details window for Enclosure updates marked Deferrable, and

install them now. The enclosure firmware updates may take 20‐30 minutes. Do not interrupt the update after it has started.

5 If you are configuring a dual‐controller Storage Center, perform steps 1–4 on the second

controller. Firmware upgrades should have installed when the first controller was updated.

6 After both controllers are upgraded to the latest version, log out of System Manager and

log back in to continue with the setup process (see Step 3 on page 128).

Version Version Version

06 04 01

Enclosure Minimum Storage Center OS Version

SC200/220 6.2.1

SC280 6.4.1

Note: When using the network to upgrade Storage Center to OS 6.4.1 for an

SC280 enclosure, the enclosure firmware updates must be installed separately

after Storage Center OS 6.4.1 is installed.





Start the Storage Center Startup WizardUse a web browser on a computer with network access to the Storage Center to access Storage Center System Manager and launch the Startup Wizard.

Prerequisites

You must have a computer that has connectivity to the Storage Center management

interface. The computer must have the following software installed:

One of the following supported web browsers (other browsers and versions may have

limited compatibility):

Microsoft Windows Internet Explorer Versions 7, 8, and 9

Microsoft Windows Internet Explorer 10 on the desktop (Internet Explorer 10

Modern version is not supported)

Mozilla Firefox on Microsoft Windows

The 32 bit (x86) Java Runtime Environment must be installed to run Storage Center

System Manager in any 32‐ bit browser.

Steps

1 Use a supported web browser to connect to the eth0 IP address or host name of controller 1.

2 Acknowledge any security messages.

The Storage Center Login page appears.

3 Enter the default user name and password:

User: Admin

Password: mmm

4 Click Login.

Note: Messages that appear may differ depending on the browser used. (Click

Continue to this website in Internet Explorer or add a security exception in

Firefox.)

Note: The user name and password are case‐sensitive.







Load the License FileUse the Load License page to upload the Storage Center license file. The license file makes settings available depending on what features were purchased.

1 Browse to the location of the license file.

2 Verify that the serial number of the license file matches the serial number of the

controller by

comparing

the

name

of

the

license

file

to

the

title

bar

of

the

Startup

Wizard.

License files use the naming convention snxxx_35_date.lic, where:

sn xxx is the serial number of the Storage Center.

35 indicates that the system runs software higher than version 3.5.

date shows the license generation date in YYMMDD format.

.lic is the file extension.

3 Select the license file, then click Load License. The Startup Wizard displays a message

when the license is successfully loaded.

If the license loads successfully, the message The license submission has completed

successfully appears.

If the message Error: The license file is not valid message is displayed, see

Troubleshooting Licenses on page 206.

4 Click Continue.

If standard drives are detected, the Create Disk Folder page appears.

If Self

‐Encrypting

Drives

(SEDs)

that

are

Federal

Information

Processing

Standard

(FIPS) 140‐2 certified are detected, Storage Center formats the drives as if Secure

Data will be used, and you are asked whether to create a Secure Data folder. See

About Secure Data on page 131.

If the No disks could be found message is displayed, see Troubleshooting Enclosures on page 205.



Complete the Startup Wizard

Dell Compellent 131

About Secure Data

Secure Data is a licensed feature that provides data‐at‐rest encryption with key

management. Using Secure Data to manage SEDs requires an external key management server. If a key management server has not been configured or is unavailable, you can

manage FIPS SEDs into a Secure Data folder, however the disks remain in a pending state

until the key management server is available.

Each FIPS disk in Storage Center has an internal Media Encryption Key (MEK). The key

resides on the disk, providing encryption for data written to the disk and decryption for data as it is read from the disk. Destroying the key makes any data on the disk immediately

and permanently unreadable, a process referred to as a crypto erase. When you add an SED

to, or release an SED from a Secure Data folder, the MEK is destroyed and a new key is generated. This allows the disk to be reused, although all previous data is lost.

To protect data at rest, all SEDs in a Secure Data disk folder lock when power is removed

(Lock on Reset enabled). When power is removed from the drive, the drive cannot be

unlocked

without

access

to

the

authority

credential

stored

in

the

key

management

server.

Note: Because disks that contain user data cannot be moved from a Secure Data

folder, Storage Center does not crypto erase disks that contain user data.





Create a Disk FolderUse the Create Disk Folder pages to assign disks to a folder in order to create a single pool of storage for volumes.

1 Select disks for the disk folder. By default, the Startup Wizard selects all available

disks.

a Scroll through the list looking at the Enclosure column and the Position or Name

column to verify that all the expected enclosures and disks are listed.

If enclosures or disks are missing, the issues might be fixed by following

Troubleshooting Enclosures on page 205.

b (Optional) From the list of disks, select disks to include in the disk folder. By default, all disks are selected.

To exclude individual disks from the disk folder, clear the corresponding check

boxes.

To include individual disks in the disk folder, click Unselect All and then select the individual disks to include.

To select all disks, click Select All.

c Click Continue. The Startup Wizard displays a prompt to select disks to designate

as hot spares.

Note: A Secure Data folder can only contain self‐encrypting FIPS drives, which

are indicated by a yellow lock icon.

Note: Dell Compellent recommends selecting all available disks to maximize

the benefits of Data Progression.




Dell Compellent 133

2 Review the hot spare disks automatically selected by the Startup Wizard.

A hot spare disk is held in reserve until a disk fails, at which point the hot spare replaces the failed disk. The hot spare disk must be as large or larger than the largest disk of its

type in the disk folder. For redundancy, there must be at least one hot spare for each

enclosure.

In general, System Manager uses the following best practices in designating hot spares:

For 2U enclosures, one spare disk for every disk class (10K, 7.5K, and so on).

For 5U enclosures, one spare disk for every 21 disks, however no single row will contain more than one spare disk.

a (Optional) Change the selection by selecting or clearing disks to be used as hot spares.

b Click Continue , and if prompted, click OK to confirm. The Startup Wizard displays a summary of the disk folder that will be created.






Dell Compellent 135

b Configure the Tier Redundancy for each tier.

The redundancy level for each tier defaults to either single redundant or dual redundant depending upon the disks expected to be found in the tier. If a tier contains at least six managed disks of which one is 900 GB or greater, then that tier and all tiers below it are set to dual redundant storage by default. If a tier contains at least six managed disks of 1.8 TB or greater, then that tier and all tiers below it are

set to

dual

redundant

storage

and

cannot

be

changed.

Single redundant storage protects against the loss of any one drive.

RAID 10 (each disk is mirrored)

RAID 5‐5 (4 data segments/1 parity segment per stripe)

RAID 5‐9 (8 data segments/1 parity segment per stripe)

Dual redundant storage protects against the loss of any two drives:

RAID 10 Dual Mirror (data is written simultaneously to three separate disks)

RAID 6‐6 (4 data segments/2 parity segments per stripe)

RAID 6‐10 (8 data segments/2 parity segments per stripe)

c From the Datapage Size drop‐down menu, choose a datapage size.

2 MB: (Default) Recommended for most application needs.

512 KB: Appropriate for applications with high performance needs (such as

certain databases) or environments in which Replays are taken frequently under heavy IO. Selecting this size reduces the amount of space the System Manager can present to servers.

4 MB: Appropriate for systems that use a large amount of disk space with

infrequent Replays (such as video streaming).

d To configure the disk folder to use RAID 0, select the Prepare for Non‐Redundant Storage check box. Non‐redundant storage does not protect data in the event of a

disk failure. Select this option only for data that is backed up some other way.

e Click Continue. The disk folder summary appears.

5 Click Create Now , and if prompted, click OK to confirm. The Add Controller page

appears.

Caution: When considering using either the 512 KB or 4 MB datapage

settings, it is recommended that you contact Dell Technical Support Services for advice on balancing resources and to understand the impact on

performance.





Add a ControllerUse the Add Controller pages to configure the second controller and to enter the IPv6

address, if used, on the leader controller.

1 Proceed based on the number of controllers in the Storage Center.

Single‐controller Storage Center: Click Continue Setup. The Time Settings page

appears.

Dual‐controller Storage Center: Click Add Controller. The wizard prompts you to

enter IPv6 address information for the first (Leader) controller.




Dell Compellent 137

2 Proceed based on whether you use IPv6 for controller addressing.

a If IPv6 is used, enter IPv6 information for the first controller and click Continue.

b If IPv6 is not used, click Skip IPv6 Configuration.

3 Configure the following fields:

Controller ID: If the HSN for Controller 2 is included in the license file, the add

controller process uses that value as the Controller ID and a different value cannot

be

entered.

If

the

HSN

for

Controller

2

is

not

in

the

license

file,

enter

the

HSN

value.

The dimmed box in the preceding figure indicates that the HSN was in the license

file making the Controller ID box unavailable.

Ether 0 Interface: Enter the IP Address , Net Mask , and Gateway for the Ether 0

interface on Controller 2.

Ether 1 Interface: Enter the IP Address , Net Mask , and Gateway for the Ether 1

interface. Use the IP address from the controller show console command for Controller 2. (Used for communication between controllers.)

Primary DNS Server: Enter the IP address of the primary DNS server.

Secondary DNS Server: (Optional) Enter the IP address of a secondary DNS server.

Domain Name: (Optional) Enter the domain name for the controller.

4 Click Continue.

The Startup Wizard displays a message that data and configuration information on the

second controller is lost and asks for confirmation.

Note: Information displayed in the following figure is for illustration only. The values displayed are unique to each Storage Center.





5 Click Join Now. Wait for the process to complete and for the controller to reboot, which

can take a few minutes. When complete, the Time Settings page appears.

Set the TimeUse the Time Settings page is to set the system time for the Storage Center.

1 Set the time zone.

a From the Region drop‐down menu, select the geographical region in which the

Storage Center is located.

b From the Time Zone drop‐down menu, select the time zone in which the Storage

Center is located.




Dell Compellent 139

2 Set the system time using one of the following methods.

To configure

time

manually,

select

Configure

Time

Manually , then

enter

the

date

and time.

To configure time using a Network Time Protocol (NTP) server, select Use NTP

Time Server , then enter the fully qualified domain name (FQDN) or IP address of an NTP server.

3 When the system time has been set, click Continue. The System Setup page appears.

Set the System IP AddressUse the System Setup page the system name and management IP address for the entire

Storage Center (one or more controllers and one or more enclosures).

1 In the System Name field, enter a name for the Storage Center. This is typically the

serial number of Controller 1.

2 (Dual‐controller only) In the Management IP Address field, enter the management IP

address specified in the pre‐installation documents. (On single‐controller systems, this field is not displayed and the message at the top of the pane reads simply, Set the

System’s name.)

The management IP address is distinct from the controller 1 and controller 2 addresses. It is the address that manages a dual‐controller Storage Center as a whole. If either controller fails, the management IP address remains valid.

Note: For locations in the United States, either select US as the region and select a time zone name, or select America as the region and select a city within the

same time zone.

Note: Accurate time synchronization is critical for replications. Dell Compellent recommends using NTP to set the system time. For more information, see:support.ntp.org/bin/view/Support/WebHome .

http://support.ntp.org/bin/view/Support/WebHome

http://support.ntp.org/bin/view/Support/WebHome





3 Click Continue. The wizard prompts you to enable or disable the read and write cache.

4 Select or clear the check boxes to enable or disable read and write cache.

5 Click Continue.

If a Secure Data folder is used with FIPS SEDs, you are prompted to configure a key

management server.

if standard drives are used, the Configure SMTP page appears.

Note: Disable cache only if no volumes will ever use cache. If cache is left enabled on this page, it can be disabled later for individual volumes. See the

Storage

Center

System

Manager

Administrator’s

Guide for information on disabling

cache on a volume‐ by‐volume basis.




Dell Compellent 141

Configure a Key Management ServerUsing Secure Data to manage Self‐Encrypting Drives (SEDs) requires an external key

management server. Establish a connection to an existing key management server in this step.

1 Enter the Host name or IP address of the key management server, the port number to

use, and a communication timeout value.

2 (Optional) Enter the name of the host or hosts to use if the primary host is unavailable.

3 If the key management server is configured to validate the client certificate, enter the

key management credentials in the Client Username and Client Password boxes.

4 Click Continue. The next page of the wizard provides information about the SSL

certificate files required to communicate with the key management server. The next page of the wizard provides information about the SSL certificate files required to

communicate with the key management server. The certificate files are generated by

your system administrator; they are not supplied by Dell Compellent.

5 Click Upload Client Certs.

6 Navigate to and select the existing public key (*.pem) file.

7 Click Continue.

8 Repeat Step 5 through Step 7 for the second controller (if present).

9 Click Upload Certstore Cert.

10 Navigate to and select the existing public key (*.pem) file.

11 Click Continue. The last page of the wizard appears.

12 Click Finish Now. The Configure SMTP page appears.

Note: The key management server must be available to manage new self‐

encrypting FIPS disks into a Secure Data folder that has already been in the Secure state.





Configure SMTPUse the Configure SMTP page to configure the SMTP mail server and the sender email address. This configuration enables alert message emails to be sent to users who have

specified a recipient address in their contact properties.

1 In the SMTP Mail Server field, enter the IP address or fully qualified domain name of the SMTP email server. Click Test server to verify connectivity to the SMTP server.

2 In the Sender E‐mail Address field, enter the email address of the sender. This address is required by most SMTP servers and is used as the MAIL FROM address of email messages.

Note: To configure SMTP later, click Skip SMTP Configuration. SMTP settings can

be configured later in the System Manager through the Storage Management

menu.




Dell Compellent 143

3 (Optional) Click Advanced to configure additional SMTP settings for sites that use an

advanced SMTP configuration. The page for advanced options appears.

a Verify that the Enable SMTP E‐mail check box is selected.

b In the SMTP Mail Server field, verify the IP address or fully qualified domain name

of the SMTP mail server that you entered in Step 1 on page 142. Modify this field if necessary.

c In the Backup SMTP Mail Server field, enter the IP address or fully qualified

domain name of the backup SMTP mail server.

d Click Test server to test the connection(s).

e In the Sender E‐mail Address (MAIL FROM) field, verify the email address of the

sender that you entered in Step 2 on page 142. Modify this field if necessary.

f In the Common Subject Line field, enter a common subject line for all emails from

Storage Center.

g (Optional) Select Send Extended Hello (EHLO) to configure use of extended hello

for mail system compatibility.

Instead of beginning the session with the HELO command, the receiving host issues the HELO command. If the sending host accepts this command, the receiving host then sends it a list of SMTP extensions it understands, and the sending host then

knows which SMTP extensions it can use to communicate with the receiving host. Implementing Extended SMTP (ESMTP) requires no modification of the SMTP

configuration for either the client or the mail server.

h (Optional) Select

Use

Authorized

Login

(AUTH

LOGIN) and

enter

the

Login

ID

and Password if the email system requires the use of an authorized login.

4 Click Continue. The Update Setup page appears.





Select Update OptionUse the Update Setup page to configure how Storage Center handles software updates.

1 Select an update option from the drop‐down menu:

Do not automatically check for software updates: Select this option to disable

automatic checking for updates. If this option is selected, the following is still available:

Manually check for updates by selecting Storage Management→ System→

Update→ Check for Update as described in the Storage Center System

Manager

Administrator’s

Guide.

Change update options by selecting Storage Management→ System→

Update→ Configure Automatic Updates as described in the Storage

Center

System

Manager

Administrator’s

Guide.

Notify me of a software update but do not download automatically: Select this option to automatically check for updates and receive notification when an update

is available. Updates are not downloaded until you explicitly download the update. (This is the default setting.)

Download software updates automatically and notify me: Select this option to

automatically download updates and receive notification when the download is

complete.

Never check for software updates (Phone Home not available): Select this option

to prevent the system from ever checking for updates. This option is for secure sites

at which

Phone

Home

is

not

available.

2 Click Continue. The User Setup page appears.




Dell Compellent 145

Set Admin AccountUse the User Setup page to the session timeout and email addresses for the Admin

account.

3 From the Session Timeout drop‐down list, select the session timeout.

4 In the Email, Email 2, and Email 3 fields, enter email addresses to which the Storage

Center sends system alerts.

5 (Optional) Click Send test e‐mail to make sure that the email addresses are accurate.

6 Click Continue.

If the Storage Center has iSCSI IO cards, the Configure IO Cards page appears.

If there are no iSCSI IO cards, the Configure Ports page appears.

Note: Make sure that the administrator receives the test email(s). Storage Center

uses email to send system alerts.





Configure IO CardsThe Configure IO Cards page appears if the Storage Center detects iSCSI IO cards. Use this

page to configure network settings for iSCSI IO cards.

1 (Optional) Click Skip iSCSI IO Card Configuration to configure network settings for the iSCSI IO cards later. The Configure Ports page appears.

2 For each iSCSI IO card that is used, complete the IP Address , a Subnet Mask , and

Gateway fields. Uninitialized iSCSI IO cards have an IP Address of 0.0.0.0 and will be

listed on a warnings page in the next step.

3 When you are finished, click Continue.

If no messages are generated, iSCSI IO card configuration is saved and the

Configure Ports page appears.

If there are issues, a message appears.

Click No

to

go

back

and

correct

the

IP

Address ,

Subnet

Mask ,

and/or

Gateway

address for cards that generated errors and/or warnings.

Click Yes to ignore the message and continue. The Configure Ports page appears.

Note: Dell Compellent recommends that you configure iSCSI IO cards during

setup.




Dell Compellent 147

Configure PortsUse the Configure Ports page to configure the front‐end and back‐end ports.

Select the Front-End Connectivity Mode(s)

Select the front‐end connectivity mode for each transport type (FC and/or iSCSI). If virtual

port mode

is

licensed,

the

transport

types

can

be

configured

to

use

different

modes.

If

virtual port mode is not licensed, all transport types must use legacy mode.

Configure Ports When Virtual Port Mode Is Not Licensed

If Virtual Ports is not licensed, the wizard informs you that the local ports have not been

configured.

1 Click Continue to generate the initial port configuration.

While the initial port configuration is being generated, the Startup Wizard displays a

page showing progress. After the configuration has been generated, it is automatically

validated.

If … Then …

Virtual Ports is Not Licensed All transport types use Legacy Mode. In this case, the Startup

Wizard displays the Initial Port Configuration page. To

continue, go to Configure Ports When Virtual Port Mode Is Not Licensed on page 147.

Virtual Ports is Licensed FC and iSCSI transport types can use legacy mode or virtual port mode. In this case, the Startup Wizard displays an operational mode choice page that allows for the choice between modes for each supported transport type. To continue, go to Configure

Ports When Virtual Port Mode Is Licensed on page 149.

Note: To skip port initialization or if there is no FC switch set up, click Skip Port Initialization.





If the validation is successful, a confirmation page appears stating that the port configuration has been generated.

If the validation fails, a page displaying warnings appears.

2 Click Configure Local Ports. The wizard displays a tab for each type of IO card that is

installed in the Storage Center (FC, iSCSI, and SAS).

3 Configure the Purpose , Fault Domain , and User Alias for all transport types. See

Configure Local Ports on page 154.

4 When you are finished configuring the local ports, click Assign Now. The wizard

informs you that the port configuration has been generated.




Dell Compellent 149

5 Click Continue. The Generate SSL Cert page appears.

Configure Ports When Virtual Port Mode Is Licensed

If Virtual Ports is licensed, the wizard informs prompts you to choose the front‐end

connectivity mode(s) for the available transport types (FC and/or iSCSI).

1 Select the front‐end connectivity mode(s).

a Select the operational mode for FC and iSCSI transports.

b Click Continue to configure the selected operational mode(s). The wizard informs you that the operational modes have been configured.





c Click Continue to begin port initialization in the selected operational mode(s).

The wizard verifies the configuration, converts selected transports to the selected

mode, displays progress pages, and presents a confirmation page when operational modes for transport types have been configured and initialized.




Dell Compellent 151

d Click Continue. The page that appears next depends on whether there are any iSCSI transports in virtual port mode:

iSCSI in virtual port mode: A request is displayed to provide the IP address information required to create the default iSCSI Fault Domain. Go to Step 2 on

page 151.

iSCSI in legacy port mode (or no iSCSI ports): While the initial port

configuration is being generated, the Startup Wizard displays a page showing

progress. After the configuration has been generated, it is automatically

validated. If the validation is successful, the confirmation page appears. If there

are issues, a page appears listing error messages. Go to Step 3 on page 152.

2 (iSCSI virtual port mode only) Configure the control port for the iSCSI fault domain.

a Enter the IP address, netmask, gateway, and port for the control port for the new

iSCSI fault domain. Check the pre‐installation documentation for this address.

b Click Continue.

The Startup Wizard generates the new iSCSI fault domain and the initial port configuration. While the initial port configuration is being generated, the Startup

Wizard displays a page showing progress. After the configuration has been

generated, it is automatically validated.

If there are issues, an error message page appears.

If the validation is successful, a confirmation page appears.





3 Click Configure Local Ports. The wizard displays a tab for each type of IO card that is

installed in the Storage Center (FC, iSCSI, and SAS).

4 Configure the Purpose , Fault Domain , and User Alias for all transport types. See

Configure Local

Ports

on

page 154.

5 When you are finished configuring the local ports, click Assign Now. The wizard

informs you that the port configuration has been generated.




Dell Compellent 153

6 Click Continue. The Generate SSL Cert page appears.





Configure Local Ports

Configure the Purpose , Fault Domain , and User Alias for all transport types. Valid port purposes for transport types depend on whether virtual ports mode is licensed on Storage

Center.

Configure FC Ports — Legacy Mode on page 154

Configure FC

Ports

—

Virtual

Port

Mode

on

page 156

Configure iSCSI Ports — Legacy Mode on page 157

Configure iSCSI Ports — Virtual Port Mode on page 158

Configure SAS Ports on page 159

The following table shows the port purposes for each transport type.

Configure FC Ports — Legacy Mode

Use the FC tab to configure the Fibre Channel ports in legacy mode.1 Click the FC tab.

Port Purpose Transport Type Description

Legacy Mode

Unknown FC, iSCSI, and SAS One of the following:

• Port purpose is not yet defined.

• The port

is

unused.

• (SAS and FC only) The port is used for direct‐connect inter‐process communication (IPC).

Front‐End Primary FC and iSCSI Port is connected to servers and is used for the server IO path.

Front‐End Reserved FC and iSCSI Port is connected to servers and used as a failover path. Only used for dual‐controller Storage Centers.

Back End FC and SAS Port is connected to disk enclosures.

Direct Connect FC and iSCSI This port purpose is not used. Do not select it for any

ports.

Virtual Port Mode

Unknown FC, iSCSI, and SAS One of the following:

• Port purpose is not yet defined.

• The port is unused.

• (SAS and FC only) The port is used for direct‐connect inter‐process communication (IPC).

Front End FC and iSCSI Port is connected to servers and is used for the server IO path.

Back End FC Port is connected to disk enclosures.




Dell Compellent 155

2 Create the required fault domains. For a dual‐controller Storage Center, create a fault domain for each pair of redundant FC ports. For a single‐controller Storage Center, create a single fault domain for all FC ports.

a Click Edit Fault Domains. The wizard displays a list of the currently defined fault domains.

b Click Create Fault Domain. A dialog box appears.

c In the Name field, type a name for the fault domain.

d From the Type drop‐down menu, select FC.

e (Optional) In the Notes field, type a description of the fault domain.

f Click Continue.

The

dialog

box

displays

a summary.

g Click Create Now to create the fault domain.

h Repeat steps b–g as needed to create additional fault domains.

i When you are finished creating fault domains, click Return. The FC tab appears.

3 Configure each back‐end FC port.

a Set the Purpose field to Back End.

b Confirm that the Fault Domain field is set to <none>.

c (Optional) Type a descriptive name in the User Alias field.

4 Configure each front‐end FC port.

a Set the Purpose field to Front End Primary or Front End Reserved as appropriate.

b Set the Fault Domain field to the appropriate fault domain that you created.


5 Configure each port that is unused or used for IPC between controllers.

a Set the Purpose field to Unknown.







Configure FC Ports — Virtual Port Mode

Use the FC tab to configure the Fibre Channel ports in virtual port mode.

1 Click the FC tab.

2 Create a fault domain for each FC fabric.




d From the Type drop‐down menu, select FC.


f Click Continue. The dialog box displays a summary.



i When you are finished creating fault domains, click Return. The FC tab appears.

3 Configure each back‐end FC port.




4 Configure each front‐end FC port.

a Set the Purpose field to Front End.



5 (Optional) Change the preferred physical port for one or more virtual ports.

a Click Edit Virtual Ports. The wizard displays a list of virtual ports.

b For each virtual port that you want to modify, select the preferred physical port In

the Preferred Physical Port.




Dell Compellent 157

c When you are finished, click Apply Changes. The iSCSI tab appears.





Configure iSCSI Ports — Legacy Mode

Use the iSCSI tab to configure the iSCSI ports in legacy mode.

1 Click the iSCSI tab.

2 Create the

required

fault

domains.

For

a dual

‐controller

Storage

Center,

create

a fault

domain for each pair of redundant iSCSI ports. For a single‐controller Storage Center, create a single fault domain for all iSCSI ports.




d From the Type drop‐down menu, select iSCSI.





i When you are finished creating fault domains, click Return. The iSCSI tab appears.

3 Configure each front‐end iSCSI port.

a Set the Purpose field to Front End Primary or Front End Reserved as appropriate.







4 Confirm that unused ports are not configured.




Configure iSCSI Ports — Virtual Port Mode Use the iSCSI tab to configure the iSCSI ports in virtual port mode.

1 Click the iSCSI tab.

2 Create a fault domain for each iSCSI network.




d From the Type drop‐down menu, select iSCSI.





i When you are finished creating fault domains, click Return. The iSCSI tab appears.

3 Configure each front‐end iSCSI port.

a Set the Purpose field to Front End.






Dell Compellent 159

4 (Optional) Change the preferred physical port for one or more virtual ports.

a Click Edit Virtual Ports. The wizard displays a list of virtual ports.

b For each virtual port that you want to modify, select the preferred physical port In

the Preferred Physical Port.

c When you are finished, click Apply Changes. The iSCSI tab appears.

5 Confirm that

unused

ports

are

not

configured.




Configure SAS Ports

Configure the back‐end SAS ports.

1 Click the SAS tab.

2 Configure each back‐end SAS port.












Generate SSL CertificateUse the Generate SSL Cert page to generate a new Secure Socket Layer (SSL) certificate or import an existing certificate for the Storage Center. The SSL certificate must match the

Storage Centerʹs IP Address or DNS host name.

The initial certificate shipped with the Storage Center may not match the IP address or

DNS host

name

assigned

to

the

Storage

Center.

If

so,

when

connecting

to

Storage

Center,

a

message is displayed identifying a mismatch between the certificate and the IP address or DNS host name of the Storage Center. Import or generate a certificate to correct the

mismatch.

Import a Certificate

If an SSL certificate has already been generated, import the certificate.

Prerequisites

The public key file must be in x.509 format.

Caution: Do not click Skip to bypass this page. Clicking Skip can result in

connection disruptions to Storage Center System Manager.




Dell Compellent 161

Steps

1 Click Import. A file browser appears.

2 Browse to the location of the public key (*.pem) file and select it.

3 Click Next.

4 Browse to the location of the private key file (*.pem).

5 Click Next. A Summary page appears that identifies the key files selected.

6 Click Save to import the certificates.





Create a New Certificate

If you do not already have a certificate that contains the Storage Center host name or IP

address, generate one now.

1 Click Generate. The wizard prompts you to enter the IP addresses and hostnames for the Storage Center.

2 In the text field, enter all DNS host name(s), IPv4 address(es), and IPv6 address(es) for this Storage Center, separated by commas. The wizard prepopulates the field with

information it knows, but it is likely that more site‐specific host names and addresses need to be entered.

3 Click Generate Now. A new certificate is generated and the session ends. To continue, refresh the browser and log on to the Storage Center again.

Caution: The host name(s) and address(es) must match this Storage Center or you will not be able to reconnect to it.



Label SC200 and SC220 Enclosures

Dell Compellent 163

Label SC200 and SC220 EnclosuresSC200 and SC220 enclosures do not have displays to indicate the enclosure ID assigned by

Storage Center software. To facilitate easy identification in the rack, use Storage Center System Manager to match each enclosure ID to a Service Tag. Locate the Service Tag on the

back of each enclosure and then label it with the correct enclosure ID.

1 Use the Storage Center System Manager to map each enclosure ID to a Service Tag.

a From the System Tree, expand the Enclosures node.

b Select an enclosure.

c On the General tab, locate and record the Index and Service Tag.

2 Create a label for each SC200/SC220 enclosure with the enclosure ID number.

Note: If the enclosure is deleted from System Manager, and then added back in, it is assigned a new index number, requiring a label change.





3 Apply an ID label to the left‐front of each enclosure.

Figure 110. SC200 and SC220 Enclosure Labels

ID 01



Dell Compellent 165

6 Perform Post-Setup Tasks

Perform connectivity and failover tests to make sure that the deployment was successful, then change administrative passwords, Phone Home, and check for updates.

ContentsVerify Connectivity and Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Configure a Phone Home Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Phone Home . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Check for Storage Center Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Next Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Verify Connectivity and FailoverThis section describes the general steps needed to verify that Storage Center is set up

properly and fails over correctly. The process includes connecting a server and copying

data to verify connectivity, and shutting down a controller to verify failover and MPIO

functionality. For details about each step, refer to the Storage Center System

Manager

Administrator’s

Guide.

Create Test VolumesConnect a server to the Storage Center, create one or more test volumes, and map them to

the server to prepare for connectivity and failover testing.

1 Connect a server to the Storage Center using Fibre Channel or iSCSI.

2 (iSCSI only) Configure the iSCSI initiator on the server to target the Storage Center.

3 Use a web browser to load the Storage Center System Manager.

Single‐controller Storage Center: Enter the controller management IP address

Dual‐controller Storage Center: Enter the shared system management IP address.

4 Log in to System Manager.

5 Define the server in System Manager.

a In the System Tree, select Servers.

b Click Create Server. The Create Server wizard appears.

c Select the server HBA(s) in the table, then click Continue.

d In the Name field, type a name for the server.

e From the Operating System drop‐down menu, select the operating system that the

server is running.



Chapter 6 Perform Post-Setup Tasks


f Click Continue. The wizard displays a summary.

g Click Create Now. The wizard displays a list of optional actions.

h Click Close. The wizard closes.

6 Create a 25 GB test volume called TestVol1.

a In the System Tree, select Volumes.

a In the Create Server wizard, click Create Volume. the Create Volume wizard

appears.

b Set the volume size to 25 GB, then click Continue.

c Click Continue to apply the default Replay Profile.

d Type TestVol1 in the Name field, then click Continue. The wizard displays a

summary.

e Click Create Now. The wizard displays a list of optional actions.

f Click Close.

7 (Dual‐controller only) Repeat Step 6 to create a second test volume named TestVol2.

8 Map TestVol1 to the first controller.

a In the System Tree, expand the Volumes node.

b Select TestVol1.

c Click Map Volume to Server. The Map Volume to Server wizard appears.

d Select the server, then click Continue. The wizard displays a summary.

e Click Advanced. The wizard displays advanced mapping options.

f In the Restrict Mapping Paths area, select the Map to controller check box, then

select the controller from the drop‐down menu.

g Click Continue. The wizard displays a summary.

h Click Create Now. The mapping is created and the wizard closes.

9 (Dual‐controller only) Repeat Step 8 to map TestVol2 to the second controller.

10 On the server, partition and format the test volume(s).

Test Connectivity and FailoverCopy data to the test volume and simulate failures to test connectivity and failover.

Test Basic Connectivity

Verify connectivity by copying some data to the test volume(s).

Test Controller Failover

If the Storage Center has dual controllers, perform a test to make sure that IO is not

interrupted by

a controller

failover.

1 Create a Test folder on the server and copy at least 2GB of data into it.

2 Manually shut down the first controller while copying data to TestVol1 to verify that IO

is not interrupted by the failover event.

a Copy the Test folder to the TestVol1 volume.

b During the copy process, shut down the first controller (the controller through

which the volume is mapped).

c Verify that the copy process continues after the controller is shut down.



Verify Connectivity and Failover

Dell Compellent 167

d After the copy finishes, turn on the controller.

e Wait 3 minutes and verify that the controller has finished starting.

f Rebalance the ports.

3 Manually shut down the second controller while copying data to TestVol2 to verify that IO is not interrupted by the failover event.

a Copy the

Test

folder

to

the

TestVol2

volume.

b During the copy process, shut down the second controller (the controller through

which the volume is mapped).

c Verify that the copy process continues after the controller is shut down.

d After the copy finishes, turn on the controller.

e Wait 3 minutes and verify that the controller has finished starting.

f Rebalance the ports.

Test MPIO

If the network environment and servers are configured for MPIO, perform tests to make

sure that failed paths do not interrupt IO.

1 Create a Test folder on the server and copy at least 2GB of data into it.

2 Make sure that the FC or iSCSI server is configured to use load balancing MPIO (round‐

robin).

3 Manually disconnect a path while copying data to TestVol1 to verify that MPIO is functioning correctly.

a Copy the Test folder to the TestVol1 volume.

b During the copy process, disconnect one of the paths and verify that the copy

process continues.

c Reconnect the port.

4 Repeat Step 3 as necessary to test additional paths.

5 (Dual‐controller Storage Center) Restart the controller that contains the active path

while IO is being transferred.

6 If the Storage Center is not in a production environment, restart the switch that contains the active path while IO is being transferred.

Clean up Test VolumesAfter testing is complete, delete the volumes used for testing.





Change Administrative PasswordsStorage Center and the iDRAC ship with default administrative credentials. As a security

measure, change them before putting the Storage Center into production.

Change Storage Center Administrative Password

Change the

administrative

password

to

something

other

than

the

default.

1 From the Storage Management menu, select User→ Change User Password.

2 Select Admin and click Continue.

3 Enter a new password in the Enter Password and Reenter Password fields.

4 Click OK.

Change iDRAC Administrative Password

Change the iDRAC administrative password to something other than the default.

1 Use a web browser to navigate to the IP address of the iDRAC in controller 1. The

iDRAC login page appears.

2 Enter the iDRAC user name (root) and password (calvin) and click Submit. The iDRAC web interface appears.

3 In the left pane of the iDRAC web interface, click User Authentication.

4 Click the Local Users tab if necessary. Locate the Administrator user row and click the

number (probably 2) in the first cell of the row.



Change Administrative Passwords

Dell Compellent 169

5 Click Next.

6 (Optional) Enter a new user name in the User Name field.

7 Enter a new password in the New Password and Confirm New Password fields.

8 Click Apply.





Configure a Phone Home ProxyIf requires hosts to use a proxy server to reach the internet, configure Phone Home to use

the proxy server before sending data with Phone Home or checking for Storage Center

updates.

1 From the Storage Management menu, select System→ Phone Home→ Configure

Phone Home

Proxy.

The

Configure

Phone

Home

Proxy

wizard

starts.

2 Select Use Phone Home Proxy Server and enter the following:

Proxy Server Address: Enter the IP address of the proxy server.

Port: Enter the TCP port number of the proxy server.

Proxy User Name: Enter the user name for the proxy server.

Proxy Password/Confirm Password: Password for the proxy server.

3 Click OK.

Phone HomeComplete setup by sending Storage Center configuration information to Dell Technical Support Services with Phone Home.

Phone Home sends a copy of a Storage Center configuration to Dell Technical Support Services to enable them to support a Storage Center. The initial configuration is sent to Dell Technical Support Services when Storage Center is installed.

Prerequisites

TCP ports 22 and 443 must be allowed outbound to the internet.

If the network requires hosts to use a proxy server to reach the internet, the Storage

Center must be configured to use a Phone Home proxy.



Phone Home

Dell Compellent 171

Steps

1 From the Storage Management menu, select System→ Phone Home→ Phone Home. The Phone Home wizard starts, listing any previous Phone Home events.

2 Click Phone Home Now. The Phone Home In Progress dialog box is displayed.

3 Click OK.

4 When the State column lists all items with Success , click Close.





Dell Compellent 173

A Adding or Removing an Enclosure

This chapter describes how to add or remove Dell Compellent enclosures from a Storage

Center.

ContentsAdding SC280 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Adding SC200/220 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Removing Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193





Adding SC280 Enclosures

Dell Compellent 175

7 Check for available updates:

a From the Storage Management menu, select System→ Update→ Update Status.

b Click Check Now. As Storage Center checks for updates, status appears in the

Update Status wizard.

c If an update is available, download and install the update as described in Storage

Center

Software

Update

Guide.8 The Storage Center System Manager informs you that you have new, unassigned disks.

From the Storage Management menu, select Disk→ Manage Unassigned Disks to

move them to the managed disk folder and add the space to the disk pool.

9 Redistribute data across all drives, by selecting Storage Management→

Disk→ Rebalance RAID.



Appendix A Adding or Removing an Enclosure


Figure 111. Connecting a New SC280 SAS Chain (A Side)

Enclosure 1

Enclosure 2

Controller A

Controller B

A B C A B C

A B C A B C

4321

4321




Dell Compellent 177

Figure 112. Connecting a New SC280 SAS Chain (B Side)

Enclosure 1

Enclosure 2

Controller A

Controller B

A B C A B C

A B C A B C

4321

4321





Adding to an Existing SC280 Enclosure ChainThe following example shows how to insert an enclosure into an existing enclosure chain

by connecting the enclosure to one side of the enclosure chain at a time.

Check the Lead Controller

Identify the lead controller by checking controller summary information in System

Manager. These cabling instructions assume that Controller A is the lead controller.

1 In the Storage Center System Manager, select the Controllers node.

2 In the controller summary pane note which controller is identified as the leader.

Check Current Disk Count

Check the current number of drives accessible by the Storage Center to use as a comparison

after a new enclosure is added.

1 In the

Storage

Center

System

Manager,

select

Storage

Management→

System→

Setup→ Configure Local Ports.

2 Maximize the Configure Local Port wizard so that you can see the Target Count column, and note the number of drives currently viewed by the controllers. This number increases when new enclosures are added.

Add an Enclosure to an Existing Chain Currently in Service

When adding enclosures to an existing configuration, add enclosures to the end of the

chain. Disconnect the chain one side at a time to maintain drive availability while adding

an enclosure.

Connecting the Enclosure to the A Side

1 Disconnect the A‐side cables from the controllers as shown in Figure 113 on page 180.

Controller A: slot 3, port 1

Controller B: slot 3, port 3

IO continues through the B‐side cables.

2 Turn on the enclosure being added. When the disks spin up, make sure that the front panel enclosure and power status LEDs show normal operation.

3 Move the cable from Enclosure 1: left, port B→ Enclosure 2: left, port C.

4 Connect a new cable between Enclosure 1: left, port B→ Enclosure 2: left, port A as

shown in Figure 114 on page 181.

5 Connect the A‐side cables to the controllers as shown in Figure 114 on page 181.

Enclosure 2: left, port C→ Controller B: slot 3, port 3.

Enclosure 1: left, port C→ Controller A, slot 3 port 1.

6 In the Storage Center System Manager, select Storage Management→ System→


7 Make sure that:

Slot and slot ports are Up and the Purpose is set to back‐end.

Target Count equals the number of added drives, demonstrating that the controller recognizes the new enclosure.

Caution: Before adding an enclosure to an existing chain, make sure that your data

is backed up. For maximum protection, add enclosures during a service outage.




Dell Compellent 179

Connecting the Enclosure to the B Side

1 Disconnect the B‐side cables from the controllers as shown in Figure 115 on page 182

Controller A: slot 3, port 3

Controller B: slot 3, port 1

IO continues through the A‐side cables.

2 Move the cable from Enclosure 1: right, port B→ Enclosure 2: right, port C.

3 Connect a new cable between Enclosure 1: right, port A→ Enclosure 2: right, port B as

shown in Figure 116 on page 183.

4 Reconnect the B‐side cables to the controllers as shown in Figure 116 on page 183.

Enclosure 1: right, port C→ Controller B: slot 3, port 1.

Enclosure 2: right, port C→ Controller A: slot 3, port 3.

Manage the New Disks

After the enclosure is connected, make sure that it is running the most recent version of software.

1 Check for available updates:

a From the Storage Management menu, select System→ Update→ Update Status.

b Click Check Now. As Storage Center checks for updates, status appears in the

Update Status wizard.

c If an update is available, download and install the update as described in Storage Center

Software

Update

Guide.

2 The Storage Center System Manager informs you that you have new, unassigned disks. From the Storage Management menu, select Disk→ Manage Unassigned Disks to

move them to the managed disk folder and add the space to the disk pool. For more information, see the Storage Center System Manager Administrator’s Guide.

3 View the list of enclosures in System Manager and verify that the new enclosures and

disks appear in the System Tree.


Setup→ Configure Local Ports. Make sure that:


Target Count equals the number of added drives, demonstrating that the controller recognizes the new enclosures.

5 To redistribute data across all drives, from the Storage Management menu, select Disk→ Rebalance RAID.

Note: Enclosures must be running the current version of firmware before managing

the drives in Storage Center System Manager.





Figure 113. Disconnect Controllers (A side)

Enclosure 1

Enclosure 2

Controller A

Controller B

Disconnect

Controllers,

A-side

Move Cable

to Enclosure

2, port C

A B C

4321

4321

A B C

A B C A B C




Dell Compellent 181

Figure 114. Add Cable and Reconnect Controllers (A Side)

Enclosure 1

Enclosure 2

Controller A

Controller B

A B C

4321

4321

A B C

A B C A B C

Add cable





Figure 115. Disconnect Controllers (B Side)

Disconnect

Controllers,

B-side

Move Cable to

Enclosure 2,

port C

Enclosure 1

Enclosure 2

Controller A

Controller B

A B C

4321

4321

A B C

A B C A B C




Dell Compellent 183

Figure 116. Add Cable and Reconnect Controllers (B Side)

Enclosure 1

Enclosure 2

Controller A

Controller B

A B C

4321

4321

A B C

A B C A B C

Add cable





Adding SC200/220 EnclosuresUse caution when adding an enclosure to a live Storage Center system to preserve the

integrity of the existing data. This section describes two methods of adding enclosures:

Create a new chain by adding enclosures to available ports on the controller’s IO cards. The current configuration is undisturbed. Creating a new chain is the safest way to

increase storage

capacity.

When

you

have

multiple

chains,

you

should

have

at

least

two

IO cards in each controller.

Add an enclosure to an existing chain by failing over to one side of the chain and then

connecting into the other side of the chain.

Creating a New Chain of SC200/220 EnclosuresThis method is safe and non‐intrusive to the existing disks and chains. Figure 117 on

page 185 shows an example of adding a new chain using the following steps.

1 If there is more than one enclosure in the new chain, cable the enclosures together first. Do not connect the chain to the controller yet. Connect the enclosures:

a New Enclosure (3): top, port B → Next Enclosure (4): top, port A.

b New Enclosure (3): bottom port B → Next Enclosure (4): bottom, port A.

2 Turn on each of the enclosures being added. When the enclosures spin up, make sure

that the front panel enclosure and power status LEDs show normal operation.

3 Connect the Controller: slot 6, port 2 → Enclosure 3: top, port A.



5 Make sure that:

Slot and slot port (in this case, slot 6, port 2) are Up and the Purpose is set to back‐

end.

Target Count equals the number of added drives, demonstrating that the controller

recognizes

the

new

enclosures.

6 In the Storage Manager System Tree, confirm the number of enclosures.

7 Connect last Enclosure (4): bottom, port B → Controller: slot 6, port 4.

8 Verify that the last enclosure has been added as described in steps 4 through 6.

9 If there are no managed disks in this system, the System Manager does not assign an

Index number. If the system contains a managed disk in any enclosure, the System

Manager assigns an index number to the new enclosures.

10 The Storage Center System Manager informs you that you have new, unassigned disks. from the Storage Management menu, select Disk→ Manage Unassigned Disks to

move them to the managed disk folder and add the space to the disk pool. For more

information, see the Storage Center System

Manager

Administrator’s

Guide.

11 To redistribute

data

across

all

drives,

from

the

Storage

Management

menu,

select

Disk→ Rebalance RAID.



Adding SC200/220 Enclosures

Dell Compellent 185

Figure 117. Connecting a New SC200/220 SAS Chain

Two new enclosures added

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller





Adding to an Existing SAS Enclosure ChainThe following example shows how to insert an enclosure into an existing enclosure chain

by connecting the enclosure to one side of the enclosure chain at a time. During this

process, one side of the enclosure chain is disconnected, and the Storage Center fails over to the side that remains connected.

Check the Lead Controller

Identify the lead controller by checking controller summary information in System

Manager. These cabling instructions assume that Controller A is the lead controller.

1 In the Storage Center System Manager, select the Controllers node.

2 In the controller summary pane note which controller is identified as the leader.

Check Current Disk Count

Check the current number of drives accessible by the Storage Center to use as a comparison

after a new enclosure is added.

1 From a workstation connected to the network, open the Storage Center System

Manager.



3 Maximize the Configure Local Port wizard so that you can see the Target Count column, and note the number of drives currently viewed by the controllers. This number increases when new enclosures are added. When adding enclosures to an

existing configuration, add enclosures to the end of the chain.

Add an Enclosure to an Existing Chain Currently in Service

Disconnect the chain one side at a time to maintain drive availability while adding an

enclosure.

1 Disconnect the A‐side cables from the controllers as shown in Figure 118 on page 187:

Controller A, slot 6 port 1

Controller B, slot 6 port 3

IO continues through the B‐side cables.

2 Turn on each of the enclosures being added. When the enclosures spin up, make sure

that the front panel enclosure and power status LEDs show normal operation.

3 Move the cable from Enclosure 2: top, port B→ Enclosure 4: top, port B.

4 Use new cables to connect the new enclosures to the A‐side cabling (Figure 118 on

page 187): Enclosure 2: top, port B→ Enclosure 3: top, port A.

Enclosure 3: top, port B→ Enclosure 4, top, port A.

Enclosures 3 and 4 are now part of the A side chain and can be connected to Controllers A and B.

Caution: Before adding an enclosure to an existing chain, make sure that your data is backed up. For maximum protection, add enclosures during a service outage.




Dell Compellent 187

Figure 118. Connect SC200/220 Enclosures to A side

5 Reconnect the A‐side Controller cables:

a Enclosure 4: top, port B→ Controller B: slot 6, port 3.

b Enclosure 1: top, port A→ Controller A, slot 6, port 1.

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller A

Controller B

Disconnect A side

New Enclosures

Connect

Enclosures

(A side)

Move Cable from

Enclosure 2

Add cable

Add cable





Figure 119. Reconnect SC200/220 A-side Cables to Controllers


Setup→ Configure

Local

Ports.

7 Make sure that:



Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller A

Controller B




Dell Compellent 189

8 Disconnect the B‐side cables from the controllers as shown in Figure 120:

Controller A: slot 6 port 3.

Controller B, slot 6 port 1.

IO continues through the A‐side cables.

9 Move the cable from Enclosure 2: bottom, port B→ Enclosure 4: bottom, port B.

10 Use new cables to connect the new enclosures to the existing enclosures (B side):

Enclosure 2: bottom, port B→ Enclosure 3: bottom, port A.

Enclosure 3: bottom port B→ to Enclosure 4: bottom port A.

Enclosures 3 and 4 are now part of the B‐side chain and can be connected to Controllers A and B.

Figure 120. Connect SC200/220 Enclosures to B Side

Disconnect B side

Connect

Enclosures

(B side)

Move Cable from

Enclosure 2

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller A

Controller B

Add cable

Add cable





11 Connect Enclosure 4: bottom, port B→ Controller A: slot 6, port 3.

12 Reconnect Enclosure 1: bottom, port A→ Controller B: slot 6, port 1.

Figure 121. Reconnect SC200/220 B-side Cables to Controllers

13 The Storage Center System Manager informs you that you have new, unassigned disks. From the Storage Management menu, select Disk→ Manage Unassigned Disks to

move them to the managed disk folder and add the space to the disk pool. For more

information, see the Storage Center System

Manager

Administrator’s

Guide.

14 In the Storage Manager System Tree, view the list of enclosures. The System Manager assigns an index number to all managed drives.

15 To redistribute data across all drives, from the Storage Management menu, select Disk→ Rebalance RAID.

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller A

Controller B




Dell Compellent 191

Adding a Second SAS Enclosure, Second ChainIn a dual‐controller, single SAS enclosure configuration, controller redundancy is created

using cross‐over cables (IPC) from controller ports 2 to controller ports 4. A second chain

performs the same redundancy as the IPC cross‐over cables.

Add an Enclosure

Add a new enclosure while maintaining redundancy.

1 Power on the enclosures being added. When the enclosures spin up, make sure that the

front panel enclosure and power status LEDs show normal operation.

2 Remove the two IPC cables from the Controllers, ports 2 and 4.

3 Connect: Controller A, port 2→ new Enclosure 3: top, port A.

4 Connect Enclosure 3: top, port B→ Controller B, port 4.



6 Make sure that:



Figure 122. Adding an SC200/220 SAS Enclosure, Step 1

Enclosure 1

Enclosure 2

Controller A

Controller B

Enclosure 3





7 Connect Controller A: port 4→ new Enclosure 3: bottom, port B.

8 Connect Enclosure 3: bottom, port A→ Controller B: port 2.



10 Make sure that:

Slot and

slot

ports

are

Up

and

the

Purpose

is

set

to

back

‐end.


Figure 123. Adding an SC200/220 SAS Enclosure, B side

Enclosure 1

Enclosure 2

Controller A

Controller B

Enclosure 2



Removing Enclosures

Dell Compellent 193

Removing EnclosuresThe following procedure describes how to use Storage Center System Manager to move

data off the disks in the enclosure to be removed. For more detailed instructions, see the

Storage

Center

System

Manager

Administrator’s

Guide.

Release DisksRelease disks to remove them from the pool in preparation of removing the enclosure.

1 In the Storage Center tree, expand the Disks node to view the disks in the enclosure.

2 Select all the disks in the enclosure you are removing.

3 From the shortcut menu, select Release Disk. The Release Disk wizard starts.

4 Note the warning and click Yes to continue. The disk is immediately released and a

dialog box opens asking if you wish to rebalance RAID devices now, later, or skip

balancing.

5 Click Yes. Wait for the rebalance operation to finish.

Enclosures with all drives in the unassigned disk folder are now safe to remove.

Remove an SC280 EnclosureThese instructions describe how to remove an enclosure from an SC280 enclosure chain. If the configuration has two enclosure chains, you do not need to take a system outage; however, the controller must be able to see all drives through one chain while the other side

is down.

Disconnect the A-side Chain

Disconnect the enclosure to be removed from the A‐side chain.

1 Disconnect the A‐side cable from Controller B: slot 3, port 3. The B side continues to

carry IO while the A side is disconnected (see Figure 124 on page 194).



3 Make sure that:



4 Remove the cable between: Enclosure 1: left, port B → Enclosure 2: left, port A (see

Figure 124 on page 194).

5 Move the cable from Enclosure 2: left, port C → Enclosure 1: left, port A (see Figure 125

on page 195).

6 Reconnect the top cable to Controller B: slot 3, port 3 (see Figure 125 on page 195).

Caution: Before you remove an enclosure, make sure that your data is backed up

and that all disks to be removed are empty of data.

Caution: To disconnect the A‐side cabling without a system outage, make sure that you first disconnect the A‐side cable from the controller. Disconnecting any other

cable first

disrupts

IO

to

the

enclosure,

resulting

in

a system

outage.





Figure 124. Disconnecting the SC280 Enclosure from the A side

Enclosure 1

Enclosure 2

Controller A

Disconnect A side

Remove the A-side

cable between

enclosures

Controller B

A B C

4321

4321

A B C

A B C A B C



Removing Enclosures

Dell Compellent 195

Figure 125. Reconnecting the A-Side Cable

Reconnect A side,

after moving the

cable below

Move the A-side cable

to remaining enclosure

Enclosure 1

Enclosure 2

Controller A

Controller B

A B C

4321

4321

A B C

A B C A B C





Disconnect the B-side Chain

Disconnect the enclosure to be removed from the B‐side chain.

1 Disconnect the B‐side cable from Controller A: slot 3, port 3. The A side continues to

carry IO while the B side is disconnected (see Figure 126 on page 197).



3 Make sure that:



4 Remove the cable between Enclosure 1: right, port A → Enclosure 2: right, port B (see


5 Move the cable from Enclosure 2: right, port C → Enclosure 1: right, port B (see


6 Reconnect the B‐side cable to Controller A: slot 3, port 3 (see Figure 127 on page 198).

7 The enclosure is now disconnected and can be removed.

a

Caution: To disconnect the B‐side cabling without a system outage, make sure that you first disconnect the B‐side cable from the controller. Disconnecting any other cable first disrupts IO to the enclosure, resulting in a system outage.



Removing Enclosures

Dell Compellent 197

Figure 126. Disconnecting the SC280 Enclosure from the B-side Chain

Disconnect

B side

Remove the B-side cable

between enclosuresMove to

Enclosure 1,

right, port B

Enclosure 1

Enclosure 2

Controller A

Controller B

A B C

4321

4321

A B C

A B C A B C





Figure 127. Reconnecting the B-Side Cable

Reconnect B side

Enclosure 1

Controller A

Controller B

4321

4321

A B C A B C



Removing Enclosures

Dell Compellent 199

Remove an SC200/SC220 EnclosureThese instructions describe how to remove the top enclosure from a SC200/SC220

enclosure chain. If the configuration has two enclosure chains, you do not need to take a

system outage; however, the controller must be able to see all drives through one chain

while the other side is down.

Disconnect the A-side Chain

Disconnect the enclosure to be removed from the A‐side chain.

1 Disconnect the A‐side cable from Controller A: slot 6, port 1. The B side continues to

carry IO while the A side is disconnected (see Figure 128 on page 200).

2 In the Configure Local Ports wizard, make sure that the B‐side ports on both controllers are Up and the Target Count recognizes the drives through the B side.

3 Remove the cable between: Enclosure 1: top, port B → Enclosure 2: top, port A (see

Figure 128 on page 200).4 Move the cable from Enclosure 1: top, port A → Enclosure 2: top, port A (see Figure 129

on page 201).

5 Reconnect the top cable to Controller A: slot 6, port 1 (see Figure 130 on page 203).

Caution: To disconnect the A‐side cabling without a system outage, make sure that you first disconnect the A‐side cable from the controller. Disconnecting any other cable first disrupts IO to the enclosure, resulting in a system outage.





Figure 128. Disconnecting the SC200/220 Enclosure from the A side

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller A Disconnect A side

Remove the A-side cable

between enclosures

Controller B



Removing Enclosures

Dell Compellent 201

Figure 129. Reconnecting the SC200/220 A side

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller AReconnect A side, after

moving the cable below

Move the A-side cable

to next enclosure

Controller B





Disconnect the B-side Chain

Disconnect the enclosure to be removed from the B‐side chain.

1 Disconnect the B‐side cable from Controller B: slot 5, port 1. The A side continues to

carry IO while the B side is disconnected (see Figure 130 on page 203).

2 In the Configure Local Ports wizard, make sure that the A‐side ports on both controllers are Up and the Target Count recognizes the drives through the A side.

3 Remove the cable between Enclosure 1: bottom, port B → Enclosure 2: bottom, port A

(see Figure 130 on page 203).

4 Reconnect the B‐side cable to Controller B: slot 5, port 1 (see Figure 131 on page 204).

5 The top enclosure is now disconnected and can be removed.

a

Caution: To disconnect the B‐side cabling without a system outage, make sure that you first disconnect the B‐side cable from the controller. Disconnecting any other cable first disrupts IO to the enclosure, resulting in a system outage.



Removing Enclosures

Dell Compellent 203

Figure 130. Disconnecting the SC200/220 Enclosure from the B-side Chain

Disconnect

B side

Remove the B-side

cable between

enclosures

Enclosure 1

Enclosure 2

Enclosure 3

Enclosure 4

Controller A

Controller B

Move to Enclosure

2, bottom, port A





Figure 131. Top SC200/220 Enclosure Disconnected

Controller AReconnect B side

Controller B



Dell Compellent 205

B Troubleshooting

This appendix contains troubleshooting steps for common problems.

ContentsTroubleshooting the Serial Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Troubleshooting Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Troubleshooting Licenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Troubleshooting Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Troubleshooting the Serial Connection

Troubleshooting Enclosures

Issue Possible Reason Solution

Unable to connect to a

controller with a serial connection

Communication problems. • Reseat or replace cables.

• Verify the telnet settings.


No Disks Found by Startup

Wizard:

No disks could be found

attached to this Dell Compellent Storage Center.

Need to update software and/or firmware to use attached

enclosure.

1 Click Quit.

2 Check for Storage Center Updates on page 172.

3 Complete the Startup Wizard on page 129.

Enclosure firmware update

failsCabling is not redundant. 1 Check the back‐end cabling and ensure that

redundant connections are used.

See SAS Redundancy on page 55 for more

information.Expected Disks and/or Enclosures are Missing

Need to update software and/or firmware to use attached

enclosure and/or drives.

1 Check the back‐end cabling and enclosure’s

power state.




Appendix B Troubleshooting


Troubleshooting Licenses

Troubleshooting Updates


Error: The license file is not valid (could be old license

file). Contact

Dell

Technical

Support Services for a new

license file.

Can happen with a dual‐controller Storage Center if

there is

an

attempt

to

apply

the

license file before the controllers

are joined and the license file is

applied to the controller with

the wrong serial number.

Make sure that all the steps in Chapter 5: Set up the

Storage Center Software, on page 119 are followed

in order

and

try

again.

• Make sure to connect to the IP address of the

controller with the lower serial number.

• Make sure the serial number in the name of the

license file matches the controller.


Cannot complete Startup

Wizard and cannot check for

updates

Your network might employ a

proxy server, Configure Phone

Home Proxy

Server

Using

the

Command Line Interface (CLI).

1 Establish a serial connection to the Storage

Center.

2 Run the following commands:

mc values set UsePhHomeProxy true

mc values set PhHomeProxyString

[ proxy server IP address]

mc values set PhHomeProxyUserName

[ proxy server user name]

mc values set PhPomeProxyPassword

[ proxy server password ]


4 Complete the Startup Wizard on page 129.



