Oceanspace S2600 Storage System Hardware Description-(V100R001_05)

Oceanspace S2600 Storage System

V100R001

Hardware Description

Issue 05

Date 2011-07-30

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Huawei Symantec Proprietary and ConfidentialCopyright © Huawei Symantec Technologies Co., Ltd.

http://www.huaweisymantec.com

mailto:[email protected]

Contents

About This Document.....................................................................................................................1

1 Device Structure.........................................................................................................................1-1

2 Overview of the S2600 Controller Enclosure........................................................................2-12.1 Functions and Features....................................................................................................................................2-22.2 Working Principles and Signal Flows.............................................................................................................2-52.3 Panel................................................................................................................................................................2-72.4 Configuration Parameters..............................................................................................................................2-132.5 Technical Specifications...............................................................................................................................2-132.6 Environmental Requirements........................................................................................................................2-182.7 Standards and Certifications..........................................................................................................................2-21

3 Components of S2600 Controller Enclosure.........................................................................3-13.1 System Enclosure............................................................................................................................................3-2

3.1.1 Structure.................................................................................................................................................3-23.1.2 Working Principles and Signal Flows....................................................................................................3-2

3.2 Controller........................................................................................................................................................3-43.2.1 Functions and Features...........................................................................................................................3-53.2.2 Working Principles and Signal Flows....................................................................................................3-53.2.3 Panel.......................................................................................................................................................3-73.2.4 Configuration Parameters.......................................................................................................................3-93.2.5 Technical Specifications........................................................................................................................3-9

3.3 Hard Disk Module.........................................................................................................................................3-103.3.1 Functions and Features.........................................................................................................................3-103.3.2 Panel.....................................................................................................................................................3-113.3.3 Technical Specifications......................................................................................................................3-11

3.4 Fan Module...................................................................................................................................................3-123.4.1 Functions and Features.........................................................................................................................3-123.4.2 Panel.....................................................................................................................................................3-123.4.3 Technical Specifications......................................................................................................................3-13

3.5 PEM...............................................................................................................................................................3-143.5.1 Functions and Features.........................................................................................................................3-143.5.2 Panel.....................................................................................................................................................3-153.5.3 Technical Specifications......................................................................................................................3-16

Oceanspace S2600 Storage SystemHardware Description Contents

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3.6 UPS Module..................................................................................................................................................3-173.6.1 Functions and Features.........................................................................................................................3-173.6.2 Panel.....................................................................................................................................................3-18

3.7 BBU Module.................................................................................................................................................3-193.7.1 Functions and Features.........................................................................................................................3-193.7.2 Panel.....................................................................................................................................................3-19

4 Overview of the D120S Disk Enclosure.................................................................................4-14.1 Functions and Features....................................................................................................................................4-24.2 Working Principles and Signal Flows.............................................................................................................4-34.3 Panel................................................................................................................................................................4-54.4 Configuration Parameters................................................................................................................................4-84.5 Technical Specifications.................................................................................................................................4-84.6 Environmental Requirements........................................................................................................................4-114.7 Standards and Certifications..........................................................................................................................4-13

5 Components of the D120S Disk Enclosure...........................................................................5-15.1 System Enclosure............................................................................................................................................5-2

5.1.1 Functions and Features...........................................................................................................................5-25.1.2 Working Principles and Signal Flows....................................................................................................5-2

5.2 Hard Disk Module...........................................................................................................................................5-45.2.1 Functions and Features...........................................................................................................................5-45.2.2 Panel.......................................................................................................................................................5-55.2.3 Technical Specifications........................................................................................................................5-5

5.3 Fan Module.....................................................................................................................................................5-55.3.1 Functions and Features...........................................................................................................................5-65.3.2 Panel.......................................................................................................................................................5-65.3.3 Technical Specifications........................................................................................................................5-6

5.4 PEM.................................................................................................................................................................5-75.4.1 Functions and Features...........................................................................................................................5-85.4.2 Panel.......................................................................................................................................................5-85.4.3 Technical Specifications........................................................................................................................5-9

5.5 Expander Module..........................................................................................................................................5-115.5.1 Functions and Features.........................................................................................................................5-115.5.2 Working Principles and Signal Flows..................................................................................................5-115.5.3 Panel.....................................................................................................................................................5-125.5.4 Configuration Parameters.....................................................................................................................5-125.5.5 Technical Specifications......................................................................................................................5-13

6 Device Cables..............................................................................................................................6-16.1 Power cables and Grounding cables................................................................................................................6-2

6.1.1 Power Cables..........................................................................................................................................6-26.1.2 Grounding Cables...................................................................................................................................6-2

6.2 Signal Cables...................................................................................................................................................6-2

ContentsOceanspace S2600 Storage System


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6.2.1 Network Cables......................................................................................................................................6-26.2.2 Serial Port Cables...................................................................................................................................6-36.2.3 SAS Cables.............................................................................................................................................6-46.2.4 Optical Fiber...........................................................................................................................................6-5

A How to Obtain Help................................................................................................................A-1A.1 Preparations For Contacting Huawei Symantec............................................................................................A-2

A.1.1 Collecting Troubleshooting Information..............................................................................................A-2A.1.2 Making Debugging Preparations..........................................................................................................A-2

A.2 How to Use the Document............................................................................................................................A-2A.3 How to Obtain Help from Website................................................................................................................A-2A.4 Ways to Contact Huawei Symantec..............................................................................................................A-3

B Glossary......................................................................................................................................B-1

C Acronyms...................................................................................................................................C-1

Oceanspace S2600 Storage SystemHardware Description Contents


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Figures

Figure 1-1 Overall structure of the S2600 storage system...................................................................................1-2Figure 2-1 Appearance of the S2600 controller enclosure...................................................................................2-2Figure 2-2 Structure of the S2600 controller enclosure.......................................................................................2-3Figure 2-3 Working principles and signal flows of the S2600 controller enclosure............................................2-6Figure 2-4 Front view of the S2600 controller enclosure.....................................................................................2-8Figure 2-5 Rear view of the S2600 controller enclosure......................................................................................2-8Figure 2-6 Air flow of the S2600 controller enclosure......................................................................................2-19Figure 3-1 Structure of the S2600 controller enclosure.......................................................................................3-2Figure 3-2 Working principles and signal flows of the system enclosure (S2600 controller enclosure).............3-3Figure 3-3 Working principles and signal flows of the controller.......................................................................3-6Figure 3-4 Controller of the S2600F controller enclosure...................................................................................3-7Figure 3-5 The controller of the S2600S controller enclosure.............................................................................3-8Figure 3-6 The controller of the S2600i controller enclosure..............................................................................3-8Figure 3-7 The controller of the S2600C controller enclosure.............................................................................3-9Figure 3-8 Hard disk module..............................................................................................................................3-11Figure 3-9 Fan module.......................................................................................................................................3-13Figure 3-10 AC PEM.........................................................................................................................................3-15Figure 3-11 DC PEM.........................................................................................................................................3-15Figure 3-12 Front view of the UPS module.......................................................................................................3-18Figure 3-13 Rear view of the UPS module........................................................................................................3-18Figure 3-14 Overall structure of the BBU module.............................................................................................3-20Figure 4-1 Appearance of the D120S disk enclosure...........................................................................................4-2Figure 4-2 Structure of the D120S disk enclosure configured with two expander modules................................4-3Figure 4-3 Working principles and signal flows of the D120S disk enclosure....................................................4-4Figure 4-4 Front view of the D120S disk enclosure............................................................................................4-5Figure 4-5 Rear view of the D120S disk enclosure..............................................................................................4-5Figure 4-6 Air flows of the D120S disk enclosure.............................................................................................4-12Figure 5-1 Appearance of the system enclosure...................................................................................................5-2Figure 5-2 Working principles and signal flows of the system enclosure (D120S disk enclosure).....................5-3Figure 5-3 Hard disk module................................................................................................................................5-5Figure 5-4 Fan module.........................................................................................................................................5-6Figure 5-5 AC PEM.............................................................................................................................................5-8Figure 5-6 DC PEM.............................................................................................................................................5-9

Oceanspace S2600 Storage SystemHardware Description Figures


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Figure 5-7 Working principles and signal flows of the expander module.........................................................5-11Figure 5-8 Expander module..............................................................................................................................5-12Figure 6-1 Network cable.....................................................................................................................................6-3Figure 6-2 Serial port cable..................................................................................................................................6-3Figure 6-3 mini SAS to SAS cable.......................................................................................................................6-4Figure 6-4 mini SAS cable...................................................................................................................................6-5Figure 6-5 Multiple mode optical fiber................................................................................................................6-6

FiguresOceanspace S2600 Storage System


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Tables

Table 2-1 Configurations of the S2600 single-controller enclosure.....................................................................2-4Table 2-2 Configurations of the dual-controller S2600 controller enclosure.......................................................2-5Table 2-3 Components of the S2600 controller enclosure...................................................................................2-9Table 2-4 Indicators of the S2600 controller enclosure......................................................................................2-10Table 2-5 Configuration parameters of the S2600 controller enclosure.............................................................2-13Table 2-6 System performance parameters of the S2600F controller enclosure................................................2-14Table 2-7 System performance parameters of the S2600S controller enclosure................................................2-14Table 2-8 System performance parameters of the S2600i controller enclosure.................................................2-15Table 2-9 System performance parameters of the S2600C controller enclosure...............................................2-15Table 2-10 Reliability parameters......................................................................................................................2-16Table 2-11 Power parameters of the S2600 controller enclosure.......................................................................2-17Table 2-12 Dimensions.......................................................................................................................................2-17Table 2-13 Weight of the components of the S2600 controller enclosure.........................................................2-17Table 2-14 Weight of the S2600 controller enclosure........................................................................................2-18Table 2-15 Requirements of the S2600 controller enclosure on temperature and humidity..............................2-18Table 2-16 Noise generated by the S2600 controller enclosure.........................................................................2-19Table 2-17 Corrosive air and density limits.......................................................................................................2-20Table 2-18 Dust density limit.............................................................................................................................2-20Table 2-19 Protocols that the S2600 controller enclosure follows.....................................................................2-21Table 2-20 Safety and EMC standards...............................................................................................................2-22Table 2-21 Industrial standards that the S2600 controller enclosure complies with..........................................2-22Table 2-22 Certification that the S2600 controller enclosure passes.................................................................2-23Table 3-1 Configuration parameters of the controller..........................................................................................3-9Table 3-2 Technical specifications of the controller..........................................................................................3-10Table 3-3 Technical specifications of the fan module........................................................................................3-13Table 3-4 Technical specifications of the AC PEM...........................................................................................3-16Table 3-5 Technical specifications of the DC PEM...........................................................................................3-17Table 3-6 Descriptions of indicators on the UPS module..................................................................................3-18Table 4-1 Parts in the D120S disk enclosure........................................................................................................4-6Table 4-2 Indicators on the front and the rear panels of the D120S disk enclosure.............................................4-6Table 4-3 Configuration parameters of the D120S disk enclosure.......................................................................4-8Table 4-4 Performance specifications of the integrated D120S disk enclosure...................................................4-8Table 4-5 Reliability specifications of the D120S disk enclosure........................................................................4-9

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Table 4-6 Power specifications of the D120S disk enclosure..............................................................................4-9Table 4-7 Dimension of the D120S disk enclosure............................................................................................4-10Table 4-8 Weight of the D120S disk enclosure..................................................................................................4-10Table 4-9 Weight of the D120S disk enclosure..................................................................................................4-10Table 4-10 Requirements on the temperature and humidity..............................................................................4-11Table 4-11 Highest rank of noise emitted by the D120S disk enclosure when the temperature is 23°C...........4-12Table 4-12 Corrosive air and density limits.......................................................................................................4-12Table 4-13 Dust density limit.............................................................................................................................4-13Table 4-14 Protocol standards that the D120S disk enclosure complies with....................................................4-13Table 4-15 Compliant safety and EMC standards..............................................................................................4-14Table 4-16 Compliant industry standards...........................................................................................................4-15Table 4-17 Certification that the D120S disk enclosure passes.........................................................................4-15Table 5-1 Technical specifications of the fan module..........................................................................................5-6Table 5-2 Technical specifications of the AC PEM.............................................................................................5-9Table 5-3 Technical specifications of the DC PEM...........................................................................................5-10Table 5-4 Configuration parameters of the expander module............................................................................5-12Table 5-5 Technical specifications of the expander module..............................................................................5-13

TablesOceanspace S2600 Storage System


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About This Document

Intended AudienceThis document describes the product versions, intended audience, organization, conventions,and update history of the Oceanspace S2600 Storage System.

This document is intended for:

l Technical support engineers

l Maintenance engineers

Update HistoryUpdates between document revisions are cumulative. Therefore, the latest document revisioncontains all updates made in previous revisions.

Updates in Issue 05 (2011-07-30)

Modified the content.








Initial release.

Oceanspace S2600 Storage SystemHardware Description About This Document


1

1 Device Structure

This chapter describes the overall structure of the Oceanspace S2600 storage system (hereinafterreferred to as the S2600).

As an enterprise-level storage device, the S2600 is a mid-range and low-end storage productthat targets the small and medium businesses (SMB) markets, carriers, governments, and relatedindustries. The S2600 is of low cost, high reliability, easy maintenance, and flexibleconfiguration.

The S2600 comprises the S2600 controller enclosure and the D120S disk enclosure. The systemenclosures of the S2600 controller enclosure and D120S disk enclosure are identical. The systemenclosure can be flexibly configured with different components. The S2600 controller enclosurecan connect up to seven D120S disk enclosures.

Figure 1-1 shows the overall structure of the S2600.

Oceanspace S2600 Storage SystemHardware Description 1 Device Structure


1-1

Figure 1-1 Overall structure of the S2600 storage system

1 Device StructureOceanspace S2600 Storage System


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2 Overview of the S2600 Controller Enclosure

About This Chapter

The controller enclosure is a device for processing I/Os from both the application servers (ASs)and storage arrays. It includes system enclosure, hard disk module, controller, PEM, and fanmodule.

2.1 Functions and FeaturesThe section describes the functions and features of the S2600 controller enclosure.

2.2 Working Principles and Signal FlowsThis section describes the working principles and signal flows of the S2600 controller enclosure.

2.3 PanelThe section describes the front view, rear view, and indicator of the S2600 controller enclosure.

2.4 Configuration ParametersThis section describes the configuration parameters of the S2600 controller enclosure.

2.5 Technical SpecificationsThis section describes the performance parameter, reliability parameter, power parameter, size,and weight of the S2600 controller enclosure.

2.6 Environmental RequirementsThis topic describes the environmental requirements of the S2600 controller enclosure, includingtemperature and humidity requirement, air flow requirement, noise, corrosive air and cleanlinessrequirement.

2.7 Standards and CertificationsThis section describes the protocol standards, safety and Electromagnetic Compatibility (EMC)standards, industrial standards, and gained certifications of the S2600 controller enclosure.

Oceanspace S2600 Storage SystemHardware Description 2 Overview of the S2600 Controller Enclosure


2-1

2.1 Functions and FeaturesThe section describes the functions and features of the S2600 controller enclosure.

The S2600 controller enclosure has the following advantages:l Mature software and hardware platforms

l Redundant functional modules

l Complete data protection

l Redundant Array of Independent Disks (RAID) groups

l Global hot-spare disk

l Data check mechanism

l Redundant connection modes

l Online check, fault location, and online replacement of all functional modules

The height of the S2600 controller enclosure is 2 U (1 U = 44.45 mm). The S2600 controllerenclosure can be installed in a standard 19-inch depth cabinet (1 inch = 25.4 mm). It has themodular design to meet requirements for system expansion. For example, the S2600 controllerenclosure and the D120S disk enclosures provide a smart storage system of high reliability, highperformance, and large capacity. It also provides the functions of performance monitoring andfault alarming.

Figure 2-1 shows the appearance of the S2600 controller enclosure.

Figure 2-1 Appearance of the S2600 controller enclosure

NOTE

The S2600 supports intermixing of SAS and SATA disks. The coffer disks and the disks in the same RAIDgroup don't support intermixing of SAS and SATA disks.

The S2600 controller enclosure has the modular design and comprises the following parts:

l System enclosure

l Hard disk module

2 Overview of the S2600 Controller EnclosureOceanspace S2600 Storage System



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l One controller or two controllers

l Two PEMs

l Two fan modules

NOTE

The controller, hard disk module, fan module, and PEM of the S2600 controller enclosure support hotswap.

Taking the S2600 controller enclosure configured with two controllers, two PEMs, and eightInternet Small Computer Systems Interface (iSCSI) host ports as an example, Figure 2-2 showsthe structure of the S2600 controller enclosure.

Figure 2-2 Structure of the S2600 controller enclosure

1 System enclosure 2 Hard disk module

3 Controller 4 PEM

5 Fan module

The S2600 controller enclosure provides the following functions:l The RAID function supports:

– RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10

– Global hot-spare disk

– The online creation, configuration, and deletion of RAID groups

l The cache function supports:– Write-back cache and write-through cache

– Cache prefetch



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– Cache power failure protection

– Cache water level modification

– Cache mirroring between controllers

l The management function supports:

– Inband management

– Redundant controllers

– Up to 256 ASs

– Up to 512 logical unit numbers (LUNs)

– Two management modes: graphical user interface (GUI) and command line interface(CLI)

l The redundancy and alarm function supports:

– 1+1 redundancy and hot swap for each module

– Multi-path access

– Monitoring the status of devices and generating alarms

l The hibernation and alarm function supports:

Supporting the hibernation mode of RAID groups

l The software and alarm function supports:

– The multi-path software

– Cluster software

The S2600 controller enclosure can be configured with one or two controllers.

Table 2-1 shows the configurations of the S2600 controller enclosure configured with onecontroller (hereinafter referred to as the S2600 single-controller enclosure).

Table 2-1 Configurations of the S2600 single-controller enclosure

Component Configuration

Processor 64-bit processor

Cache 2 GB/4 GB

Controller l Supporting SAS or SATA disks

l Providing one 4 x 3 Gbit/s mini SAS expander port

Front-end host port The S2600 controller enclosure can be configured with any of thefollowing:

l Four 4 Gbit/s FC a host ports b

l Two 4 x 3 Gbit/s mini SAS host ports

l Four 1 Gbit/s iSCSI host ports

l Two 4 Gbit/s FC host ports and two 1 Gbit/s iSCSI host ports

Other modules Remote dialup for management through the RS-232




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a: Fiber Channel (FC)b: FC host ports are compatible with rates of 1 Gbit/s, 2 Gbit/s, and 4 Gbit/s.

Table 2-2 shows the configurations of the S2600 controller enclosure configured with twocontrollers (hereinafter referred to as S2600 single-controller enclosure).

Table 2-2 Configurations of the dual-controller S2600 controller enclosure


Processor 64-bit processor

Cache 4 GB/8 GB

Controller l Supporting SAS or SATA disks

l Providing two 4 x 3 Gbit/s mini SAS expander ports

Front-end host port The S2600 controller enclosure can be configured with any one of thefollowing:l Eight 4 Gbit/s FC host ports

l Four 4 x 3 Gbit/s mini SAS host ports

l Eight 1 Gbit/s iSCSI host ports

l Four 4 Gbit/s FC host ports and four 1 Gbit/s iSCSI host ports

Other modules l Remote dialup for management through the RS-232

l Built-in channel dedicated to the communication betweencontrollers

2.2 Working Principles and Signal FlowsThis section describes the working principles and signal flows of the S2600 controller enclosure.

The S2600 controller enclosure comprises the system enclosure, controller, PEM, fan module,hard disk module, and backplane.

Figure 2-3 shows the working principles and signal flows of the S2600 controller enclosure.



2-5

Figure 2-3 Working principles and signal flows of the S2600 controller enclosure

Backplane

HARDDISK*3HARDDISK*3Hard disk module

of S2600 controller enclosure

Controller A

PEM A

Fan module A

Controller B

PEM B

Fan module B

Port moduleHBA card of

AS

D120Sdisk enclosure

142

Management data flow between disk modules and controllers

1

2

Service data flow between ASs and front-end host ports of controllers

Service data flow between disk enclosures and back-end expander ports of controllers2

1

1

2

3 4

3

Heartbeat management data flow between controllers

4 Service data flow between disk modules and controllers

1

2

Management data flow between PEMs and controllers

3

Mirroring service data flow between controllers

1

42

3

4

3

Port module







Management data flow between fan modules and controllers

HBA card of AS

D120Sdisk enclosure

Functions of Each ModuleThe functions of each module in the controller enclosure are as follows:l Host port module

The host port module is mainly used to connect the controller enclosure to the server host.The module is the service receiving end of the S2600 controller enclosure. Currently, theS2600 controller enclosure supports FC, SAS, iSCSI, and Combo host ports (two iSCSIhost ports and two FC host ports), providing the host with four FC, two SAS, four iSCSIhost ports. The host port connects with the HBA or the assigned port of the server.

l Expander moduleThe expander module is mainly used to connect the controller enclosure to the D120S diskenclosure. The module is the SAS downlink interface. The SES controller provides 24 SASports in all. SAS ports in port 0 to port 3 are used as host expander ports (invalid now) onthe control board. SAS ports in port 4 to port 7 are used to connect the controller enclosureto the disk enclosure.

l Mirror moduleThe primary and secondary controllers are mirror controllers. Therefore, if one controllerfails, the data in the controller will not be lost. The mirror module connects with controller




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B and establishes mirror channels between controller A and controller B. During the I/Ooperation, if the LUN where the operation is performed is not ascribed to controller A, thenthe instruction to read and write data will be transferred to controller B through the mirrormodule, and controller B feeds back the result to controller A through the mirror module.The mirror module is used only when the storage system has two controllers.

l Heartbeat moduleThe system implements the heartbeat function through the heartbeat GE and heartbeat IIC.Through the heartbeat module, the controller can acquire related information about the peercontroller, and ensure two controllers to manage the system synchronously.

2.3 PanelThe section describes the front view, rear view, and indicator of the S2600 controller enclosure.

Front View and Rear ViewAccording to the number of controllers and type of front-end host ports, the S2600 controllerenclosures are divided into four types. Each type can be configured with one or two controllers:l S2600F controller enclosure

One (or two) controller with FC host ports.l S2600S controller enclosure

One (or two) controller with SAS host ports.l S2600i controller enclosure

One (or two) controller with iSCSI host ports.l S2600C controller enclosure

One (or two) controller with FC host ports and iSCSI host ports.

NOTE

If the S2600 controller enclosure is configured with two controllers, the host ports of two controllers musthave the same type.

Figure 2-4 shows the front view of the preceding four types of the S2600 controller enclosures(configured with one or two controllers).



2-7

Figure 2-4 Front view of the S2600 controller enclosure3 4

65

1

2

1 Controller enclosure startup/alarm indicator 2 Controller enclosure power indicator

3 Disk module 4 Disk handle

5 Disk running indicator 6 Disk alarm/locating indicator

From left to right and then from up to down, the 12 slots of the S2600 controller enclosure arenumbered from 0 to 11. The slot on the upper left side of the S2600 controller enclosure is slot0.

The hard disks in slots 0, 1, 2, and 3 of the S2600 controller enclosure are the coffer disks of thesystem and store the important data of the system.

Taking the dual-controller S2600 controller enclosure configured with two PEMs and four iSCSIhost ports as an example, Figure 2-5 shows the rear view of the S2600 controller enclosure.

Figure 2-5 Rear view of the S2600 controller enclosure

1 PEM spring leaf 2 Power socket

3 Power running/alarm indicator 4 PEM

5 PEM handle 6 Fan module spring leaf

7 Fan running/alarm indicator 8 Fan module handle

9 Fan module 10 Controller B (secondary controller)

11 CLI serial port 12 UPS serial port

13 Mini SAS expander port 14 Link indicator of the mini SAS expanderport

15 Controller alarm indicator 16 Port module




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17 Management network interface 18 Controller spring leaf

19 Controller A (primary controller) 20 Link indicator of the iSCSI host port

21 Active indicator of the iSCSI host port 22 Controller power indicator

23 Mute button of the buzzer 24 iSCSI host port

25 Reset button 26 Link indicator of the managementnetwork interface

27 Active indicator of the managementnetwork interface

Table 2-3 lists the components of the S2600 controller enclosure.

Table 2-3 Components of the S2600 controller enclosure

Component

Sub Component Description

Controller - a Each controller provides:l One mini SAS expander port

l One 10/100 M adaptive management networkinterface b

l One CLI serial port

l One UPS serial port

l One Mute button of the buzzer

l One reset button

FC port module c Each FC port module provides four FC hostports.

SAS port module d Each SAS port module provides two mini SAShost ports.

iSCSI port module e Each iSCSI port module provides four iSCSI hostports.

Combo port module f Each Combo port module provides two FC hostports and two iSCSI host ports.

Hard diskmodule

- Each controller enclosure supports up to 12 SASor SATA disks.

Fan module - l Each controller enclosure is configured withtwo fan modules.

l Each fan module has two fans.

BBU gmodule

- Each controller is configured with one BBUmodule.



2-9

Component

Sub Component Description

PEM - Each controller enclosure can be configured withone or two PEMs h.

a: Not available.b: The iSCSI host ports and the management network interfaces must be located in differentsubnets to ensure the normal operation of the management network interfaces.c: The S2600F controller enclosure is configured with one or two FC port modules.d: The S2600S controller enclosure is configured with one or two SAS port modules.e: The S2600i controller enclosure is configured with one or two iSCSI port modules.f: The S2600C controller enclosure is configured with one or two Combo port modules.g: Backup Battery Unith: The dual-controller S2600 controller enclosure must be configured with two PEMs.

IndicatorsTable 2-4 lists the indicators on the front panel and the rear panel of the S2600 controllerenclosure. These indicators show the current operating status of the S2600 controller enclosure.

Table 2-4 Indicators of the S2600 controller enclosure

Module Indicator Color State Description

Front panel

Systemenclosure

Startup/alarmindicator ofthe controllerenclosure

Red On The controller enclosure is out ofservice or an alarm is generated onthe controller enclosure.NOTE

If the indicator is red more than tenminutes, the system encounters anemergent fault.

Orange Blinking The controller enclosure is beingstarted.NOTE

If the indicator is blinking more thanten minutes, the system failed to start.

- Off The controller enclosure operatesnormally.

Powerindicator ofthe controllerenclosure

Green On The controller enclosure ispowered on.

Green Blinking The controller enclosure is beingstarted.




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- Off The controller enclosure is notpowered on.

Hard diskmodule

Runningindicator ofthe SAS disk

Green Blinking Data is being transferred on theSAS disk.

Green On The SAS disk is powered onnormally.

- Off The SAS disk is powered onabnormally.

Alarm/locationindicator ofthe SAS disk

Red On An alarm is generated on the SASdisk.

Red Blinking The SAS disk is located.

- Off No alarm is generated on the SASdisk.

Runningindicator ofthe SATAdisk

Green Blinking Data is being transferred on theSAS disk.

Green On The SATA disk is powered onnormally.

- Off The SATA disk is powered onabnormally.

Alarm/locationindicator ofThe SATAdisk

Red On An alarm is generated on theSATA disk, or the SATA disk islocated.

Red Blinking The SATA disk is located.

- Off No alarm is generated on theSATA disk.

Rear panel

Fan module Fan running/alarmindicator

Green On The fans operates normally.

Red On An alarm is generated on the fans.

- Off The fans are powered onabnormally.

PEM Powerrunning/alarmindicator

Green On The power supply is normal.

Orange Blinking An alarm is generated on the PEM.

- Off The controller enclosure is notpowered on, or the PEM ispowered on abnormally.



2-11


Controller Activeindicator ofthemanagementnetworkinterface

Orange Blinking Data is being transmitted.

- Off No data is being transmitted.

Link indicatorof themanagementnetworkinterface

Green On The link to the managementnetwork interface is normal.

- Off The link to the managementnetwork interface is abnormal.

Controllerpowerindicator

Green On The controller is powered onnormally.

- Off The controller is powered onabnormally.

Controlleralarmindicator

Red On An alarm is generated.

Red Turns on,and thenturns offafter thecontrolleris startednormally.

The controller is starting.

- Off The system is normal.

Link indicatorof the miniSAS expanderport

Green On The disk channel is normal.

- Off The disk channel is abnormal.

Link indicatorof the FC hostport

Green On The link to the ASs is normal.

- Off The link to the ASs is abnormal.

Rate indicatorof the FC hostport

Green On The data transmission rate betweenthe storage system and the ASs is4 Gbit/s.

- Off The data transmission rate betweenthe storage system and the ASs is2 Gbit/s or 1 Gbit/s.

Activeindicator ofthe mini SAShost port

Orange Blinking Dada is being transmitted.





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Link indicatorof the miniSAS host port



Activeindicator ofthe iSCSI hostport

Orange Blinking Dada is being transmitted.


Link indicatorof the iSCSIhost port



2.4 Configuration ParametersThis section describes the configuration parameters of the S2600 controller enclosure.

Table 2-5 lists the configuration parameters of the S2600 controller enclosure.

Table 2-5 Configuration parameters of the S2600 controller enclosure

Module Name Configuration Description

PEM The PEM supplies power to the S2600 controller enclosure. ThePEM can be AC PEM or DC PEM.

BBU module l Each S2600 controller is equipped with one BBU module,which provides power failure protection for the controllerenclosure.

l When the external power is abnormal, the BBU modulesupplies 12 V DC power to the S2600 controller enclosure toensure that all data in the cache can be written to the cofferdisks.

2.5 Technical SpecificationsThis section describes the performance parameter, reliability parameter, power parameter, size,and weight of the S2600 controller enclosure.

System Performance ParametersTable 2-6, Table 2-7, Table 2-8, and Table 2-9 list the system performance parameters of theS2600 controller enclosure.



2-13

Table 2-6 System performance parameters of the S2600F controller enclosure

Parameter Value

Hard disk type SAS and SATA

Minimum/Maximum number of hard disks Four/Twelve

Maximum capacity of a SATA disk 2 TB

Maximum capacity of a SAS disk 600 GB

Number of mini SAS expander ports (for the dual-controller S2600 controller enclosure)

Two

Number of mini SAS expander ports (for the S2600single-controller enclosure)

One

Rate of the mini SAS expander port 4 x 3 Gbit/s

Number of FC host ports (for the dual-controllerS2600 controller enclosure)

Eight

Number of FC host ports (for the S2600 single-controller enclosure)

Four

Rate of the FC host port 4.25 Gbit/s, 2.125 Gbit/s, or 1.0625Gbit/s

Maximum number of LUNs 512

RAID level RAID 0, RAID 1, RAID 5, RAID 6,and RAID 10

Table 2-7 System performance parameters of the S2600S controller enclosure

Parameter Value

Supported hard disk type SAS and SATA





Two


One


Number of SAS host ports (for the dual-controllerS2600 controller enclosure)

Four




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Parameter Value

Number of SAS host ports (for the S2600 single-controller enclosure)

Two

Rate of the SAS host port 4 x 3 Gbit/s


Supported RAID level RAID 0, RAID 1, RAID 5, RAID 6,and RAID 10

Table 2-8 System performance parameters of the S2600i controller enclosure

Parameter Value






Two


One


Number of iSCSI host ports (for the dual-controllerS2600 controller enclosure)

Eight

Number of iSCSI host ports (for the S2600 single-controller enclosure)

Four

Rate of the iSCSI host port 1 Gbit/s


Supported RAID level RAID 0, RAID 1, RAID 5, RAID 6,and RAID 10

Table 2-9 System performance parameters of the S2600C controller enclosure

Parameter Value






2-15

Parameter Value



Two


One


Number of FC host ports (for the dual-controller S2600controller enclosure)

Four

Number of FC host ports (for the S2600 single-controller enclosure)

Two

Rate of the FC host port 4.25 Gbit/s, 2.125 Gbit/s, or1.0625 Gbit/s

Number of iSCSI host ports (for the dual-controllerS2600 controller enclosure)

Four

Number of iSCSI host ports (for the S2600 single-controller enclosure)

Two

Rate of the iSCSI host port 1 Gbit/s


Supported RAID level RAID 0, RAID 1, RAID 5, RAID6, and RAID 10

Reliability ParametersTable 2-10 lists the reliability parameters of the S2600 controller enclosure.

Table 2-10 Reliability parameters

Parameter Value

System availability ≥ 99.999%

MTTRa < 2 hours

MTBFb > 700000 hours

a: MTTR(Mean Time To Repair)b: MTBF(Mean Time Between Failure)




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Power ParametersThe S2600 controller enclosure uses redundant power supplies and can adapt itself to ACvoltages automatically.

When configured with one PEM, each S2600 controller enclosure provides one AC power cableor one DC power cable. When configured with two PEMs, each S2600 controller enclosureprovides two AC power cables or two DC power cable. Each AC/DC power cable connects onePEM in the S2600 controller enclosure to an independent external power supply.

Table 2-11 lists the power indexes of the S2600 controller enclosure.

Table 2-11 Power parameters of the S2600 controller enclosure

Index Value Range

Range of the AC power input voltage 100 V ～ 240 V

Range of the input AC voltage frequency 47 Hz ～ 63 Hz

Maximum input AC power ≤ 340 W

Range of the DC power input voltage -48 V ～ -60 V

NOTE

The maximum input AC power and DC power in Table 2-11 refers to the power when the S2600 controllerenclosure is configured with twelve 450 GB SAS disks in the ambient temperature of 40°C. The lower theambient temperature is, the lower the input power is. The smaller the capacity of the disk is, the lower thepower is.

DimensionsTable 2-12 lists the dimensions of the S2600 controller enclosure.

Table 2-12 Dimensions

Length Width Height

536 mm 446 mm 86.1 mm

WeightTable 2-13 lists the weight of the components of the S2600 controller enclosure.

Table 2-13 Weight of the components of the S2600 controller enclosure

Name Weight

Controller 2.0 kg/controller

SAS disk module 0.9 kg/module



2-17

Name Weight

SATA disk module 0.8 kg/module

Fan module 1.0 kg/module

PEM 1.8 kg/module

BBU module 0.29 kg/module

The weight of the S2600 controller enclosure depends on the number of installed components.Table 2-14 lists the weight of the S2600 controller enclosure.

Table 2-14 Weight of the S2600 controller enclosure

Name Weight

S2600 controllerenclosure

≤ 30 kg

The value refers to the weight of the S2600 controller enclosure afterall the components are installed.

2.6 Environmental RequirementsThis topic describes the environmental requirements of the S2600 controller enclosure, includingtemperature and humidity requirement, air flow requirement, noise, corrosive air and cleanlinessrequirement.

Temperature and Humidity

Table 2-15 lists the requirements of the S2600 controller enclosure on temperature and humidity.

Table 2-15 Requirements of the S2600 controller enclosure on temperature and humidity

Condition Parameter Value

Temperature Operation temperature 5°C to 40°Ca

Storage temperature -15°C to 40°C

Relative humidity Operation humidity 5% RH to 85% RH

Storage humidity 5% RH to 95% RH

The environment temperature ranges from 5°C to 40°C when the system runs at an altitudeof -60 meters to +1,800 meters, and 5°C to 35°C when the system runs at an altitude of 1,800meters to 3,000 meters.




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Heat Dissipation and Air FlowThe cooled air enters from the gaps between the hard disks at the front, and passes through thebackplane into the power and controller module area. The cooled air is used by the power andcontroller modules for heat dissipation and discharged by the fans.

The whole heat dissipation system comprises two fan modules. Each fan module has two fans.When one fan fails, the other three fans can satisfy the dissipation requirement of the wholeS2600 controller enclosure under the temperature of 5°C to 35°C.

NOTE

l Leave a space no less than 100 cm between a cabinet and the wall and a space of no less than 120 cmbetween two cabinets to ensure ventilation.

l Ensure that the cabinet does not have an enclosed space inside and that air inside the cabinet effectivelyexchanges with air in the machine room. Leave a space of 1 U over and under the device respectively.

Figure 2-6 shows the airflow of the S2600 controller enclosure.

Figure 2-6 Air flow of the S2600 controller enclosure

NoiseTable 2-16 lists the Loudest noise generated by the S2600 controller enclosure when theenvironment temperature is 23°C.

Table 2-16 Noise generated by the S2600 controller enclosure

Measurement Parameter Maximum Noise

Voice pressure 72 dBA

Corrosive AirCorrosive air must be controlled in an equipment room to reduce device damages. Table 2-17lists the types and density limits of corrosive air.



2-19

Table 2-17 Corrosive air and density limits

Type Maximum Value (mg/m3)

SO2 0.20

H2S 0.006

NH3 0.05

Cl2 0.01

To reduce corrosive air under the density limits, perform the following operations:

l Do not set up an equipment room in an area with a high corrosive air density, such as achemical factory.

l Do not make the entrance of an equipment room face a pollution source.

l Keep unused batteries away from devices. It is recommended to keep unused batteries indifferent rooms.

l Use environment-friendly heat insulation rather than sulfurated rubber and plastic heatinstallation.

l Test the corrosive air densities by professional organizations periodically.

Cleanliness Requirement

Dust attached on devices may cause electrostatic adsorption. This results in poor contact ofmetallic connectors and plug-ins, damages to devices, or shortened device lifecycles.

To ensure the normal operating of the devices, equipment rooms must be free of explosive,conductive, magnetoconductive, and corrosive dust. Table 2-18 lists the density limits of dust.

Table 2-18 Dust density limit

Mechanically Active Substance Maximum Value (granule/m3)

Dust granulea ≤3×104 (No visible dust on a desk top withinthree days)

a: diameter ≥ 5 μm

To reduce dust under the density limit, perform the following operations:

l Decorate the ground, wall, and ceiling with materials that do not generate dust.

l Place screens on windows and doors to prevent dust.

l Clean equipment rooms and dust screens periodically. The recommended period is onemonth.

l Wear shoe covers and an ESD suit before you enter an equipment room.




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2.7 Standards and CertificationsThis section describes the protocol standards, safety and Electromagnetic Compatibility (EMC)standards, industrial standards, and gained certifications of the S2600 controller enclosure.

ProtocolsTable 2-19 lists the protocol standards that the S2600 controller enclosure complies with.

Table 2-19 Protocols that the S2600 controller enclosure follows

Item Standard

FC l FC-PH: ANSI X3.230

l FC-PH2: ANSI X3.297

l SCSI-FCP: ANSI X.269

l FC-AL: ANSI X.272

l FC-AL-2: ANSI NCITS332-1999

l FC-SW: ANSI NCITS321

l FC-SW-2: ANSI NCITS 355-2001

l FC-GS: ANSI X.288 (for FC switches)

l FC-GS2: ANSI NCITS 288 (for FC switches)

SAS l Serial Attached SCSI - 1.1 (SAS - 1.1)

l T10/1562D Rev. 05 Serial Attached SCSI (SAS)

l T10/1601D Rev. 07Serial Attached SCSI Model-1.1 (SAS 1.1)

l Serial ATA Specification, revision 2.5

l SFF 8301Form Factor of 3.5" Disk Drives

l SFF 83233.5" drive form factor with serial connector

l SFF 8482SAS plug connector

SCSI 3 l SAM-2: ANSI INCITS 366-2003

l SPC-2: ANSI INCITS 351-2001

l SBC: ANSI INCITS 306-1998

RAID The RAID book

PICMG3.0 Advanced telecommunications Computing Architecture

PICMG3.1 Ethernet/Fiber Channel Over PICMG 3.0

SNMP Trap RFC2578 (SNMP v2)



2-21

Safety Regulations and EMC

Table 2-20 lists the safety and EMC standards that the S2600 controller enclosure complieswith.

Table 2-20 Safety and EMC standards

Item Standard

Safety standard in North America UL 1950

Safety standard in North America UL 60950

European safety standard LVD 73/23/EEC

European safety standard EN 60950

USA EMC standard FCC, 47 CFR Part 15, Subpart B

European EMC standard EMC Directive 89/336/EEC

European EMC standard EN 55022

European EMC standard EN 55024

Industrial Standards

Table 2-21 lists the industrial standards that the S2600 controller enclosure complies with.

Table 2-21 Industrial standards that the S2600 controller enclosure complies with

Item Standard

Ethernet IEEE 802.3

Fast Ethernet IEEE 802.3u

Gigabit Ethernet IEEE 802.3z

IEEE standard test access port andboundary-scan architecture

IEEE 1149.1-2001

Procedure for failure modes andeffects analysis (FMEA)

IEC 812

Presentation of reliability,maintainability and availabilitypredictions

IEC 863

ETSI standard (environment) ETS 300 019

ETSI standard (power supply) ETS 300 132

ETSI standard (noise) ETS 300 753





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Item Standard

ETSI standard (grounding) ETS 300 253

ITUT standard (grounding) ITUT K.27

Environmental protection ECMA TR/70

Reliability GR-929.Telcordia SR-332

CertificationTable 2-22 lists the certification that the S2600 controller enclosure passes.

Table 2-22 Certification that the S2600 controller enclosure passes

Certification Description

CB The IEC System for conformity Testing and Certification ofElectrotechnical equipment and Components (IECEE). Thiscertification mainly involves safety regulations.

CCC China compulsory certification (CCC) mainly involves the productsrelated to human health and security, animal and plant life and health,environmental protection, and public security.

CE Conformite Europeenne. Products that bear the ConformiteEuropeenne (CE) marking comply with the EMC Directive (89/336/EEC) and the Low Voltage Directive (73/23/EEC) issued by theCommission of the European Union.

GOSTR A certification in the Commonwealth and Russia. A CE or CBcertificate is necessary for a product to pass the GOSTR certification.

RoHS RoHS is a European Union (EU) compulsory standard that isdesigned to regulate the materials and the technical standard of theelectrical and electronic products. In this way, it does good to humanhealth and environment protection.

UL Underwriters Laboratories Inc (UL) is a non-profitable product safetytest and certification institute.



2-23

3 Components of S2600 Controller Enclosure

About This Chapter

This section describes the components of the S2600 controller enclosure, including systemenclosure, controller, hard disk module, fan module, PEM, and BBU module.

3.1 System EnclosureThis section describes the system enclosure of the S2600 controller enclosure, including thefunctions, features, working principles, and signal flows of the system enclosure.

3.2 ControllerThis section describes the controller of the S2600 controller enclosure, including the functionsand features, working principles and signal flows, panel, configuration parameters, and technicalspecifications.

3.3 Hard Disk ModuleThis section describes the functions and features, panel, and technical specifications of the harddisk module of the S2600 controller enclosure.

3.4 Fan ModuleThis section describes the fan module of the S2600 controller enclosure, including functions andfeatures, panel, and technical specifications.

3.5 PEMThis section describes the PEM of the S2600 controller enclosure, including functions andfeatures, panel, and technical specifications.

3.6 UPS ModuleThis topic describes the UPS module of the S2600 controller enclosure, including functions andfeatures, and panel.

3.7 BBU ModuleThis section describes the BBU module of the S2600 controller enclosure, including functionsand features, and panel.

Oceanspace S2600 Storage SystemHardware Description 3 Components of S2600 Controller Enclosure


3-1

3.1 System EnclosureThis section describes the system enclosure of the S2600 controller enclosure, including thefunctions, features, working principles, and signal flows of the system enclosure.

3.1.1 StructureThis section describes the functions and structure of the system enclosure.

3.1.2 Working Principles and Signal FlowsThis section describes the working principles and signal flows of the system enclosure of theS2600 controller enclosure.

3.1.1 StructureThis section describes the functions and structure of the system enclosure.

The S2600 controller enclosure and the D120S disk enclosure have the same hardware structureof the system enclosure. Different components can be inserted to the system enclosure to achieveflexible configuration.

Figure 3-1 shows the structure of the S2600 controller enclosure.

Figure 3-1 Structure of the S2600 controller enclosure

3.1.2 Working Principles and Signal FlowsThis section describes the working principles and signal flows of the system enclosure of theS2600 controller enclosure.

Figure 3-2 shows the working principles and signal flows of the system enclosure of the S2600controller enclosure.

3 Components of S2600 Controller EnclosureOceanspace S2600 Storage System



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Figure 3-2 Working principles and signal flows of the system enclosure (S2600 controllerenclosure)

Disk module

5555

55

Cont

rolle

r A

5

Backplane

6

3

4 13

4

Cont

rolle

r B

78

1

PEM

A

Fan

mod

ule

APE

M B

Fan

mod

ule

B

2

2

55

55

5

9

6

78

9

1 Connects the PEM to the backplane.

2 Connects the fan module to the backplane.

3 Transfers data, control, and clock signals between the expander module and the backplane.

4 Connects to the power socket of the expander module.

5 Transfers data, clock, and power signals between the hard disk module and the backplane.



3-3

6 Management network port. It connects with the external network, and is the management channel ofthe system network. The management network port is valid after the system is started up and the IPaddress is set.

7 SAS expander port. It is the service channel that connects with the D120S disk enclosure through themini SAS cable.

8 SES management serial port. It communicates with the SES controller.

9 System serial port. It manages the system. The functions of the system serial port are the same as thatof the management network port except that the system serial port does not connect to the externalnetwork. The system serial port is used to query the system status and configure the system IP addressbefore the system is started up.

Functions of Each ModuleThe functions of each module in the system enclosure of the controller enclosure are as follows:l Back-end disk module

The back-end disk module is the disk array of the controller enclosure. It comprises 12disks to provide storage services for users. According to different requirements, the RAIDgroup level can be RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10. If the D120S diskenclosure is connected to the controller enclosure, the back-end disk module operates withthe disk enclosure to provide storage capacity for users.

l PEMThe PEM supplies power for the controller enclosure, and provides the power informationand key data for users through the IIC.

l Fan moduleThe fan module is the fan of the storage system. It dissipates heat from the system. Thesystem can control the fan speed through the PWM pin.

l ControllerThe controller manages the whole controller enclosure.

l BackplaneThe backplane connects the controller with its peer controller, the PEM, the fan module,and the disk array through corresponding connectors.

NOTEThe controller, hard disk module, fan module, and PEM of the S2600 controller enclosure support hot swap.

3.2 ControllerThis section describes the controller of the S2600 controller enclosure, including the functionsand features, working principles and signal flows, panel, configuration parameters, and technicalspecifications.

3.2.1 Functions and FeaturesThis section describes the functions and features of the controller.

3.2.2 Working Principles and Signal FlowsThis section describes the working principles and signal flows of the controller.




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3.2.3 PanelThis section describes the panel of the controller.

3.2.4 Configuration ParametersThis section describes the configuration parameters of the controller.

3.2.5 Technical SpecificationsThis section describes the technical specifications of the controller.

3.2.1 Functions and FeaturesThis section describes the functions and features of the controller.

The controller provides the following functions:

l Handling storage services

The controller receives read/write commands from the network ports of the ASs, executesthese commands, and returns the results to the ASs.

l Receiving configuration management commands from users and saving configurationinformation through GUI or CLI

l Connecting SAS/SATA disks

The controller connects the SAS or SATA disks in the S2600 controller enclosure or theD120S disk enclosure to the S2600.

l Saving information on configuration, alarms, and logs to the local coffer

l When the input of the mains is normal, the controller monitors the running status of theBBU module

l Each S2600 controller is configured with one BBU module to prevent power failures ofthe controller enclosure

– The BBU module can provide power for the controller enclosure after the power fails.When the input power fails, the BBU module can provide power for the controllerenclosure for at least two minutes. Therefore, all the data in the write cache of thecontroller can be transferred to coffer disks to avoid data loss.

– The service life of the BBU module is three to five years. When the service life is over,the Integrated Storage Manager (ISM) will send the expiring alarm to inform technicalsupport engineers to replace this module.

The S2600F controller enclosure provides the FC SAN function. The S2600S controllerenclosure provides the DAS function. The S2600i controller enclosure provides the IP SANfunction. The S2600C controller enclosure provides the FC SAN and IP SAN functions.

NOTE

SAN: storage area network

3.2.2 Working Principles and Signal FlowsThis section describes the working principles and signal flows of the controller.

Taking the controller configured with the iSCSI port module as an example, Figure 3-3 showsthe working principles and signal flows of the controller.



3-5

Figure 3-3 Working principles and signal flows of the controller

SAS expander chip

SAS initiator

Data processing

moduleHeartbeat

cable module

Management network port

module

Mirror module

Controller A

iSCSI port module

Expander disk enclosure

Application Server

Disks in controller enclosure

Controller B

Controller B

Serial port

1

5

3

2 1

Service data flow Management data flow

iSCSI port module

4

66

7

Maintenance terminal

4Expander port

4

115

10

8

99

10Maintenance terminal

Application Server

1 After receiving the read/write command from the AS, the iSCSI port module sends the commandto the data processing module.

2 The data processing module performs algorithms and sends results to the SAS initiator.

3 The SAS initiator sends the command to the SAS expander chip.

4 After analyzing the command, the SAS expander chip performs data operation on disks of thecontroller enclosure or disks of the disk enclosure.

5 If the LUN where the operation is performed does not belong to controller A, the data processingmodule sends the read/write command to controller B through the mirror module.

6 After receiving the management command from the maintenance terminal, the management portmodule sends the command to the data processing module.

7 The data processing module sends the results to the SAS initiator.

8 After receiving the management command, the SAS initiator sends it to the SAS expander chip. TheSAS expander chip manages each module through the management command.

9 The serial port sends the management command from the maintenance terminal to the SAS expanderchip. After receiving the management command, the SAS expander chip manages each module.

10 The heartbeat cable module sends the heartbeat signal of controller A to controller B and receivesthe heartbeat signal from controller B.

NOTE

l Controller A and controller B are two controllers on the same storage device. If one controller is set tobe the primary controller, and the other controller is set to be the secondary controller.

l The management data is sent to the controller through the maintenance terminal and serial port.

Functions of Each Module

The functions of each module in the controller are as follows:

l iSCSI port module




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The iSCSI port module provides the service interface to connect the AS to the storagesystem. The module is used to receive data read/write instructions that are sent by the AS.

l Management network port moduleThe management network port module provides the management network port for thestorage system. The maintenance terminal can configure and maintain the storage systemthrough the management network port.

l Heartbeat cable moduleThe heartbeat cable module of controller A connects with the heartbeat cable of controllerB. The module maintains the primary/secondary status of two controllers through theheartbeat cable. The heartbeat cable module transfers the heartbeat signal and controlcommand. The module is used only when the storage system has two controllers.

l Mirror moduleThe mirror module connects with controller B and establishes mirror channels betweencontroller A and controller B. During the I/O operation, if the LUN where the operation isperformed is not ascribed to controller A, then the instruction to read and write data willbe transferred to controller B through the mirror module, and controller B feeds back theresult to controller A through the mirror module. The module is used only when the storagesystem has two controllers.

l SAS initiatorThe SAS initiator initiates the read/write command of the disk.

l Data processing moduleThe data processing module processes the SCSI read/write command that is received bythe iSCSI host port, and sends the result to the SAS initiator.

l SAS expander chipThe SAS expander chip provides 36 expander ports: 24 ports are used to connect disks ofthe controller enclosure, four ports are used to connect the expanded disk enclosure, fourports are used to connect the SAS initiator, and four ports are reserved.

3.2.3 PanelThis section describes the panel of the controller.

According to the type of front-end host ports, the S2600 controller enclosures are divided intofour types. Each type can be configured with one or two controllers.

Figure 3-4 shows the controller of the S2600F controller enclosure.

Figure 3-4 Controller of the S2600F controller enclosure

1 Controller spring leaf 2 Management network interface

3 FC host port 4 Link indicator of the FC host port



3-7

5 Rate indicator of the FC host port 6 FC port module

7 CLI serial port 8 UPS serial port

9 Mini SAS expander port 10 Link indicator of the mini SAS expander port

11 Controller power indicator 12 Controller alarm indicator

13 Mute button of the buzzer 14 Reset button

15 Link indicator of the management network interface 16 Active indicator of the management networkinterface

Figure 3-5 shows the controller of the S2600S controller enclosure.

Figure 3-5 The controller of the S2600S controller enclosure

1 Mini SAS host port 2 SAS port module

3 Active indicator of the mini SAS host port 4 Link indicator of the SAS host port

Figure 3-6 shows the controller of the S2600i controller enclosure.

Figure 3-6 The controller of the S2600i controller enclosure

1 iSCSI host port 2 Active indicator of the iSCSI host port

3 Link indicator of the iSCSI host port 4 iSCSI port module

Figure 3-7 shows the controller of the S2600C controller enclosure.




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Figure 3-7 The controller of the S2600C controller enclosure21 3

iSCSI 0

EXP

LINK

MGNTUPSiSCSI 1

FC 0 FC 1

Link 4G Link 4G

1 iSCSI host port 2 FC host port

3 Combo port module

NOTE

For details on indicators on the controller, see Table 2-4.

3.2.4 Configuration ParametersThis section describes the configuration parameters of the controller.

Table 3-1 lists the configuration parameters of the controller.

Table 3-1 Configuration parameters of the controller


Port module The port module provides different types of host ports for theS2600. The port module can be configured with the FC/SAS/iSCSI/Combo port module.

BBU module Each controller is configured with one BBU module to preventpower failures of the controller.

Serial port The S2600 can be debugged and managed through the serialport.

Management network port The default IP addresses of the management network ports ofthe controller is 192.168.128.101 and 192.168.128.102. Youcan log in to the storage system, configure services, managemapping, and query log information through the IP address ofthe management network port of the controller.

3.2.5 Technical SpecificationsThis section describes the technical specifications of the controller.

Table 3-2 lists the technical specifications of the controller.



3-9

Table 3-2 Technical specifications of the controller

Parameter Value

Weight 2.0 kg/controller

Power supply mode External power supply. Supporting AC andDC.

Voltage -48 V to -60 V DC.

Maximum current 24 A

Power consumption 60 W to 80 W.

Temperature 5°C to 40°C

Humidity 5% RH to 85% RH

3.3 Hard Disk ModuleThis section describes the functions and features, panel, and technical specifications of the harddisk module of the S2600 controller enclosure.

3.3.1 Functions and FeaturesThis section describes the functions and features of the hard disk module.

3.3.2 PanelThis section describes the panel of the hard disk module.

3.3.3 Technical SpecificationsThis section describes the technical specifications of the hard disk module.


The hard disk module provides the following functions:

l Storing system configuration informationSystem configuration information is stored on the coffer disks of the S2600 controllerenclosure, that is, disks in slot 0, 1, 2, and 3.

l Saving the data in the cache in the case that the input power supply of the system is faultyWhen the external power supply of the system fails, the BBU module supplies power tothe controller enclosure. The system writes data in the cache to the coffer disks within twominutes.

l Providing storage capacityThe S2600 controller enclosure stores the system data in the coffer disks and uses theremaining capacity for storage.

Disks in slot 0, 1, 2, and 3 of the S2600 controller enclosure are the coffer disks, storing importantdata of the system. Figure 2-4 shows the locations of slot 0, 1, 2, and 3 of the S2600 controllerenclosure.




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CAUTIONl Make sure that a hard disk is present in slot 0 or slot 1 and slot 2 or slot 3 respectively.

l The four coffer disks must be of the same type produced by the same manufacturer.

l Do not remove or insert a coffer disk or adjust the order of the coffer disks; otherwise, thesystem data may be damaged.

l Do not use a coffer disk as a hot-spare disk.


The S2600 controller enclosure supports the following types of hard disks:

l Each SAS disk module comprises a handle, a hard disk tray, a SAS disk, and a SASconversion board.

l Each SATA disk module comprises a handle, a hard disk tray, a SATA disk, and a SATAconversion board.

Figure 3-8 shows a hard disk module.

Figure 3-8 Hard disk module

1 Handle 2 Hard disk tray

3 SAS/SATA disk 4 SAS/SATA conversion board


The S2600 controller enclosure supports up to 12 hard disks. It supports the following types ofhard disks:

l 1 TB, and 2 TB SATA disks with the rotation speed of 7200 r/min

l 300 GB, 450 GB, and 600 GB SAS disks with the rotation speed of 15000 r/min



3-11

NOTE

l The S2600 controller enclosure supports intermixing of SAS disks and SATA disks.

l To save storage capacity and to obtain better performance, you are recommended to use disks of thesame capacity and rotation speed in a RAID group.

CAUTIONDo not insert or remove a hard disk at will; otherwise, data loss might occur.

3.4 Fan ModuleThis section describes the fan module of the S2600 controller enclosure, including functions andfeatures, panel, and technical specifications.

3.4.1 Functions and FeaturesThis section describes the functions and features of the fan module.

3.4.2 PanelThis section describes the panel of fan module.

3.4.3 Technical SpecificationsThis section describes the technical specifications of the fan module.


CAUTIONThe S2600 controller enclosure must be equipped with fan modules with the same version ofsoftware and from the same manufacturer.

Fan modules dissipate heat from the S2600 controller enclosure.

Fan modules of the S2600 controller enclosure operate in 1+1 redundancy mode.

Fan modules support hot swap. One fan module meets the requirements of the S2600 controllerenclosure (fully loaded) on heat dissipation under the temperature of 5°C to 35°C within 1.5minutes. Each fan module has two built-in fans. When one fan is faulty, the entire system is notaffected.

3.4.2 PanelThis section describes the panel of fan module.

Figure 3-9 shows the fan module of the S2600 controller enclosure.




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Figure 3-9 Fan module

1 Fan module spring leaf 2 Fan running/alarm indicator

3 Fan module handle

NOTE

For descriptions of the indicators of fan modules, see Table 2-4.


Table 3-3 lists the technical specifications of the fan module.

Table 3-3 Technical specifications of the fan module

Type Parameter Value

Appearance Dimensions 97 mm (length) x 94 mm(width) x 33 mm (height)

Weight 1 kg/fan module

Lead length 300 mm

Number of pins 4

Rated voltage 12 V DC

Operation voltage 7 V to 13.2 V DC

Basic electrical parameter Startup voltage ≤ 7 V DC

Standard operating current 1.2 A

Maximum operating current 1.5 A

Rated power 13.2 W

Maximum powerconsumption

≤ 20 W

Rated rotation speed 4300 rpm

Rotation speed control mode PWM speed control



3-13


Speed control mode andcontrol signal

Speed control voltage -0.8 V to 20 V DC

High-level input signalvoltage

2.8 V to 20 V DC

Low-level input signalvoltage

-0.8 V to 0.4 V DC

Basic performance index Operation temperature -10°C to 60°C

Operation humidity 5% RH to 90% RH



3.5 PEMThis section describes the PEM of the S2600 controller enclosure, including functions andfeatures, panel, and technical specifications.

3.5.1 Functions and FeaturesThis section describes the functions and features of the PEM.

3.5.2 PanelThis section describes the panel of PEM.

3.5.3 Technical SpecificationsThis section describes the technical specifications of the PEM.


CAUTIONThe S2600 controller enclosure must be equipped with PEMs with the same version of softwareand from the same manufacturer.

The S2600 controller enclosure supports the following two types of PEM:

l AC PEM

Supplying power to the S2600 controller enclosure when the AC input voltage ranges from100 V to 127 V and 200 V to 240 V

l DC PEM

Supplying power to the S2600 controller enclosure when the DC input voltage ranges from-48 V to -60 V.




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CAUTIONThe AC PEM and DC PEM cannot be mixed interchangeably in the one S2600 controllerenclosure.

The S2600 controller enclosure can be configured with one or two PEMs.

One PEM can support the S2600 controller enclosure to operate in the maximum powerconsumption mode. When configured with two PEMs, the S2600 controller enclosure supportshot swap of PEM. When one of the two PEMs is faulty, the S2600 controller enclosure stilloperates normally.

3.5.2 PanelThis section describes the panel of PEM.

Figure 3-10 shows the AC PEM of the S2600 controller enclosure. Figure 3-11 shows the DCPEM of the S2600 controller enclosure.

Figure 3-10 AC PEM


3 Power running/alarm indicator 4 Power fan

5 PEM handle

Figure 3-11 DC PEM

1 PEM spring leaf 2 Power running/alarm indicator

3 Power socket 4 PEM handle



3-15

NOTE

For details on the indicators of the PEM, see Table 2-4.


Table 3-4 lists the technical specifications of the AC PEM. Table 3-5 lists the technicalspecifications of the DC PEM.

Table 3-4 Technical specifications of the AC PEM


Input attribute Input voltage 90 V to 264 V AC

Rated input voltage 100 V to 127 V AC/200 V to240 V AC

Maximum input current l ≤ 9.9 A ( the input voltageis from 90 V to 127 V.)

l ≤ 5 A (the input voltage isfrom 180 V to 240 V.)

Rated input current l ≤ 8.9 A (the input voltageis from 100 V to 127 V.)

l ≤ 4.5 A (the input voltageis from 200 V to 240 V.)

Input voltage frequency 47 Hz to 63 Hz

Output attribute Rated output voltage 12 V to 5 V DC

Output voltage 11.64 V to 12.36 V DC/4.8 Vto 5.25 V DC

Output current 1 A to 58 A/0 A to 2 A

Output power 700 W

Output efficiency ≥ 80% (the input voltage isfrom 100 V to 240 V.)

Operation requirement Protection range of the inputundervoltage

75 V±5 V AC

Recovery range of the inputundervoltage

85 V±4 V AC

Output overvoltage 13.5 V to 14.5 V DC/5.7 V to6.5 V DC

Current-limiting protectionof the output current

70 A to 80 A/3 A to 6 A




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Table 3-5 Technical specifications of the DC PEM


Input attribute Input voltage -48 V to -60 V DC

Rated input voltage -48 V DC

Maximum input current 23 A

Input surge current 34.5 A

Rated input power 696 W


Regulated voltage precision ±3%/±5%

Ripple noise 50 mV

Cross regulation rate ±3%/±3%

Output power 700 W to 840 W

Output efficiency ≥ 88%


-35 V DC


-36 V DC

Output overvoltage 13.5 V to 14.5 V DC/6 V to6.8 V DC

3.6 UPS ModuleThis topic describes the UPS module of the S2600 controller enclosure, including functions andfeatures, and panel.

3.6.1 Functions and FeaturesThis topic describes the functions and features of the UPS module.3.6.2 PanelThis topic describes the panel and indicators of the UPS module.

3.6.1 Functions and FeaturesThis topic describes the functions and features of the UPS module.

The S2600 controller enclosure can be equipped with one or two UPSs, which provide powerfailure protection for the controller enclosure.

When the external power supply is normal, the UPS module supplies 200 V AC power to theS2600 controller enclosure. When the external power is abnormal, the UPS module supplies 200V DC power to the S2600 controller enclosure for at least two minutes to ensure that all data inthe cache is written to coffer disks.



3-17

3.6.2 PanelThis topic describes the panel and indicators of the UPS module.

The following two figures take the S2600 controller enclosure configured with two UPSs as anexample. Figure 3-12 shows the front view of the UPS module.

Figure 3-12 Front view of the UPS module

1 UPS handle

Figure 3-13 shows the rear view of the UPS module.

Figure 3-13 Rear view of the UPS module

1 UPS power switch 2 Power input socket

3 Power output socket 4 Serial port

5 Battery charging and power supply status indicator 6 Battery discharging indicator

7 UPS power alarm indicator 8 UPS module enclosure

Table 3-6 lists the indicators on the back panel of the UPS module. After the system is poweredon, you can determine the operating status of the UPS module by viewing the indicators.

Table 3-6 Descriptions of indicators on the UPS module

Indicator Color Status Description

Battery charging andpower supply statusindicator

Green On Power in the batteryis enough.

Blinking The battery ischarging.

- Off The battery stopscharging or isdischarging.

Battery dischargingindicator

Green On The battery isdischarging.




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Indicator Color Status Description

- Off The battery stopsdischarging.

UPS power alarmindicator

Red On An alarm isgenerated on thepower supply.

- Off No alarm isgenerated on thepower supply.

3.7 BBU ModuleThis section describes the BBU module of the S2600 controller enclosure, including functionsand features, and panel.

3.7.1 Functions and FeaturesThis section describes the functions and features of the BBU module.

3.7.2 PanelThis section describes the panel of the BBU module.

3.7.1 Functions and FeaturesThis section describes the functions and features of the BBU module.

Each controller is equipped with one BBU, which provide power-off protection for the controllerenclosure.

When the external power is abnormal, the BBU module supplies 12V DC power to the S2600controller enclosure for at least two minutes to ensure that all data in cache can be written to thecoffer disks.

CAUTIONIf the device is powered off for a long time, the voltage of the BBU embedded in the device willjump down and even the BBU may be damaged. Thus, routine maintenance for the BBU isrequired. As recommended, power on the device every two months to fully charge the BBU andthen power off the device again.

3.7.2 PanelThis section describes the panel of the BBU module.

Figure 3-14 shows the overall structure of the BBU module.



3-19

Figure 3-14 Overall structure of the BBU module




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4 Overview of the D120S Disk Enclosure

About This Chapter

This chapter describes the functions and features, working principles and signal flows, panels,configuration parameters, technical specifications, environmental requirements, and standardsand certifications of the D120S disk enclosure.

4.1 Functions and FeaturesThis section describes the functions and features of the D120S disk enclosure.

4.2 Working Principles and Signal FlowsThis section describes the working principles and signal flows of the D120S disk enclosure.

4.3 PanelThe section describes the front and rear view, indicators of the D120S disk enclosure.

4.4 Configuration ParametersThis section describes the configuration parameters of the D120S disk enclosure.

4.5 Technical SpecificationsThis section describes the performance parameter, reliability parameter, power parameter, size,and weight of the D120S disk enclosure.

4.6 Environmental RequirementsThis topic describes the environmental requirements of the D120S disk enclosure, includingtemperature and humidity requirement, air flow requirement, noise, corrosive air and cleanlinessrequirement.

4.7 Standards and CertificationsThis section describes the protocol standards, safety and Electromagnetic Compatibility (EMC)standards, industrial standards, and gained certifications of the D120S disk enclosure.

Oceanspace S2600 Storage SystemHardware Description 4 Overview of the D120S Disk Enclosure


4-1

4.1 Functions and FeaturesThis section describes the functions and features of the D120S disk enclosure.

The D120S disk enclosure operates with an S2600 controller enclosure to provide the followingfunctions:l RAID

– Supporting Serial ATA (SATA) disks and SAS disks

– Supporting RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10

– Supporting global hot-spare disks

l Cache– Supporting write-through cache

– Supporting write-back cache

– Supporting pre-fetching cache

l LUN– Supporting LUN mapping

– Supporting LUN formatting

l Redundancy and alarm– Supporting 1+1 redundancy and hot swap for each module

– Supporting fault alarm and device monitoring

Figure 4-1 shows the appearance of the D120S disk enclosure.

Figure 4-1 Appearance of the D120S disk enclosure

The D120S disk enclosure has a modular design and comprises the following parts:l One system enclosure

l Disk modules

l One or two expander modules

4 Overview of the D120S Disk EnclosureOceanspace S2600 Storage System



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l Two power entry modules (PEMs)

l Two fan modules

Figure 4-2 lists the structure of the D120S disk enclosure configured with two expandermodules.

Figure 4-2 Structure of the D120S disk enclosure configured with two expander modules

1 System enclosure 2 Hard disk module

3 Expander module 4 PEM

5 Fan module

NOTE

In the D120S disk enclosure with the single expander module, the PEM, fan module, and expander modulemust be on the same side.

4.2 Working Principles and Signal FlowsThis section describes the working principles and signal flows of the D120S disk enclosure.

Figure 4-3 shows the working principles and signal flows of the D120S disk enclosure.



4-3

Figure 4-3 Working principles and signal flows of the D120S disk enclosure

Expander module A

PEM A

Fan module A

Backplane

Expander module B

PEM B

Fan module B

S2600 controller

1

1

1

1

1

Service data flow between controllers and expander modules 1

2

2

3

4

2

2

3

4

2

2 Management data flow between expander modules and PEMs

3

4

S2600 controller


of D120S disk enclosure







Service data flow between expander modules and disk modules

Management data flow between controllers and expander modules

Management data flow between expander modules and disk modules

Management data flow between expander modules and fan modules


The functions of each module in the disk enclosure are as follows:l Expander module

The expander module comprises the uplink and downlink. The uplink connects with theS2600 controller enclosure, and the downlink connects with the next D120S disk enclosure.Currently, one controller enclosure can be expanded to a maximum of seven D120S diskenclosures.

l Serial port moduleThe serial port module provides serial ports. The running status of the system and the keyinformation about the single board can be queried through the serial ports.

l JBOD interface module




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Provided by the SES chip, the JBOD interface module manages disk arrays and transfersrelated business processes.

4.3 PanelThe section describes the front and rear view, indicators of the D120S disk enclosure.

Front and Rear ViewsFigure 4-4 shows the front view of the D120S disk enclosure.

Figure 4-4 Front view of the D120S disk enclosure3 4

65

1

2

1 Disk enclosure startup/alarm indicator 2 Disk enclosure power indicator

3 Disk module 4 Disk handle

5 Disk running indicator 6 Disk alarm/location indicator

Figure 4-5 shows the rear view of the D120S disk enclosure.

Figure 4-5 Rear view of the D120S disk enclosure

1 Power socket 2 PEM

3 PEM handle 4 Spring leaf of the fan module

5 Fan running/alarm indicator 6 Fan module handle

7 Fan module 8 PEM spring leaf

9 Power running/alarm indicator 10 Link indicator of the EXP expander port



4-5

11 Link indicator of the PRI expander port 12 Spring leaf of the expander module

13 Enclosure ID indicator 14 EXP expander port

15 Power indicator of the expander module 16 Alarm indicator of the expander module

17 PRI expander port 18 Reset button

19 Debug serial port

Table 4-1 lists the parts in the D120S disk enclosure.

Table 4-1 Parts in the D120S disk enclosure

Part Description

System enclosure Combines the modules in the systemenclosure.

Hard disk module Supports a maximum of 12 SATA hard disksor SAS hard disks.

Fan module Dissipates heat for the D120S disk enclosure.

PEM Supplies AC or DC power to the D120S diskenclosure.

Expander module Connects the D120S disk enclosure to thecontroller enclosure.

Indicators

Table 4-2 lists the indicators on the front and the rear panels of the D120S disk enclosure. Afterthe D120S disk enclosure is powered on, you can learn the status of the D120S disk enclosureby observing the indicators.

Table 4-2 Indicators on the front and the rear panels of the D120S disk enclosure

Module Indicator Color Status Description

Front panel

Systemenclosure

Power indicatorof the diskenclosure

Green On The D120S diskenclosure is powered on.

Green Blinking The D120S diskenclosure is starting.

- Off The D120S diskenclosure is not poweredon or no alarm isgenerated.




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Startup/Alarmindicator of thedisk enclosure

Red On The D120S diskenclosure is not inservice or an alarm isgenerated on the D120Sdisk enclosure.

Orange Blinking The D120S diskenclosure is starting.

- Off The D120S diskenclosure runs normally.

Hard diskmodule

Disk runningindicator

Green Blinking Data is being transmittedfrom or to the hard disk.

- Off The D120S diskenclosure is powered onabnormally or notpowered on.

Runningindicator of theSAS hard disk

Green On The SAS hard disk ispowered on normally.

Runningindicator of theSATA disk

Green On The SATA disk ispowered on normally.

Disk alarm/locationindicator

- Off The hard disk is poweredon normally.

Red On An alarm is generated onthe hard disk.

- Off No alarm is generated onthe expander module.

Rear panel

Fan module Fan running/alarm indicator

Green On The fan is normal.

Red On The fan is faulty.

PEM Power running/alarm indicator

Green On The power supply isnormal.

Orange Blinking An alarm is generated onthe power.

Expandermodule

Power indicatorof the expandermodule

Green On The expander module ispowered on normally.

- Off The expander module ispowered on abnormally.



4-7


Alarm indicatorof the expandermodule

Red On; off fiveseconds later

The expander module isstarting.

Red On An alarm is generated onthe expander module.

- Off No alarm is generated onthe expander module.

Link indicatorof the expanderport

Green On The link is normal

Off The link is abnormal.

4.4 Configuration ParametersThis section describes the configuration parameters of the D120S disk enclosure.

Table 4-3 lists the configuration parameters of the D120S disk enclosure.

Table 4-3 Configuration parameters of the D120S disk enclosure


PEM The PEM supplies power to the D120S disk enclosure. The PEMcan be AC PEM or DC PEM.

4.5 Technical SpecificationsThis section describes the performance parameter, reliability parameter, power parameter, size,and weight of the D120S disk enclosure.

Performance SpecificationsTable 4-4 lists the performance specifications of the integrated D120S disk enclosure.

Table 4-4 Performance specifications of the integrated D120S disk enclosure

Item Specification

Maximum storage capacity SATA disk: 24 TB (2 TB SATA disk)SAS hard disk: 7.2 TB (600 GB SAS hard disk)

Maximum number of harddisks

12

Expander port type SAS





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Item Specification

RAID level 0, 1, 3, 5, 6, 10 and 50

Reliability Specifications

Table 4-5 lists the reliability specifications of the D120S disk enclosure.

Table 4-5 Reliability specifications of the D120S disk enclosure

Item Specification

System availability ≥ 99.999%

MTTR < 2 hours

MTBF > 700000 hours

Power Requirements

The D120S disk enclosure supports redundant power supplies. It can adapt to the AC powervoltage automatically

To select the installation site for the D120S disk enclosure, consider the following factors:

l AC Power grounding protection

The cabling must contain grounding protection for connecting to the AC power supply.

l Power guarantee and overload protection

The circuits and related circuit breakers must provide sufficient power supply and overloadprotection. Separate power supply from the large distribution load, such as the airconditioner engine, elevator engine and factory load to prevent possible damage to theD120S disk enclosure.

Each D120S disk enclosure is equipped with two AC or DC power cables. Each power cableconnects one PEM in the D120S disk enclosure to the external power supply.

Table 4-6 lists the power specifications of the D120S disk enclosure.

Table 4-6 Power specifications of the D120S disk enclosure

Name Specification

Input AC voltage range 100 V ～ 240 V

Input AC voltage frequency range 47 Hz ～ 63 Hz

Maximum input AC power ≤ 230 W

Input DC voltage range -48 V ～ -60 V



4-9

NOTE

As shown in Table 4-6, the maximum input for AC power is the power when the D120S disk enclosure isconfigured with twelve SAS hard disks with the capacity of 450 GB and the environment temperature is40ºC. The lower the environment temperature is, the lower the input power is. The smaller the hard diskcapacity is, the lower the input power is.

DimensionTable 4-7 lists the dimension of the D120S disk enclosure.

Table 4-7 Dimension of the D120S disk enclosure

Length Width Height

536 mm 446 mm 86.1 mm

WeightTable 4-8 lists the weight of the parts of the D120S disk enclosure.

Table 4-8 Weight of the D120S disk enclosure

Name Weight

SATA disk module 0.8 kg/module

SAS disk module 0.9 kg/module

Expander module 1.4 kg/module

PEM 1.8 kg/module

Fan module 1.0 kg/module

The weight of the D120S disk enclosure depends on the number of installed components, asshown in Table 4-9.

Table 4-9 Weight of the D120S disk enclosure

Name Weight

D120S disk enclosure ≤ 30 kg

The value refers to the weight of the D120Sdisk enclosure when all the parts are installed.




Issue 05 (2011-07-30)

4.6 Environmental RequirementsThis topic describes the environmental requirements of the D120S disk enclosure, includingtemperature and humidity requirement, air flow requirement, noise, corrosive air and cleanlinessrequirement.

Temperature and HumidityTable 4-10 lists the requirements on the temperature and humidity.

Table 4-10 Requirements on the temperature and humidity

Item Parameter Requirement

Temperature Operation 5°C to 40°Ca

Storage -15°C to 40°C

Relative humidity Operation 5% RH to 85% RH

Storage 5% RH to 95% RH

a: To operate the D120S disk enclosure at an altitude of -60 meters to +1,800 meters, ensurethat the temperature is within the range of 5°C to 40°C; to operate the D120S disk enclosureat an altitude of 1,800 meters to 3,000 meters, ensure that the temperature is within the rangeof 5°C to 35°C.

Heat Dissipation and Air FlowsThe D120S disk enclosure adopts the heat dissipation mode of front absorption and backdissipation. The cooled air enters from the gaps between the hard disks at the front, and passesthrough the rear panel into the power and expander module area. The cooled air is used by thepower and expander module for heat dissipation and finally discharged by the fan.

The entire heat dissipation system comprises four fans. Each fan module has two built-in fans.When one fan fails, the other fan meets the heat dissipation requirement of the D120S diskenclosure for the full-load operation at 5°C to 35°C.

NOTE

For the convenience of maintenance, ventilation, and heat dissipation, pay attention to the following wheninstalling the D120S disk to the cabinet:

l It is suggested to reserve the space of at least 100 cm between the cabinet and the wall and the spaceof at least 120 cm between cabinets for the convenience of ventilation.

l Ensure ventilation in the cabinet and the machine room. It is suggested to reserve the space of 1 Uabove the device and below the device.

Figure 4-6 shows the air flows of the D120S disk enclosure.



4-11

Figure 4-6 Air flows of the D120S disk enclosure

Noise

Table 4-11 lists the highest rank of noise emitted by the D120S disk enclosure when thetemperature is 23°C.

Table 4-11 Highest rank of noise emitted by the D120S disk enclosure when the temperature is23°C

Parameter Value

Voice pressure < 72 dBA

Corrosive Air

Corrosive air must be controlled in an equipment room to reduce device damages. Table 4-12lists the types and density limits of corrosive air.

Table 4-12 Corrosive air and density limits

Type Maximum Value (mg/m3)

SO2 0.20

H2S 0.006

NH3 0.05

Cl2 0.01

To reduce corrosive air under the density limits, perform the following operations:




Issue 05 (2011-07-30)

l Do not set up an equipment room in an area with a high corrosive air density, such as achemical factory.

l Do not make the entrance of an equipment room face a pollution source.

l Keep unused batteries away from devices. It is recommended to keep unused batteries indifferent rooms.

l Use environment-friendly heat insulation rather than sulfurated rubber and plastic heatinstallation.

l Test the corrosive air densities by professional organizations periodically.

Cleanliness Requirement

Dust attached on devices may cause electrostatic adsorption. This results in poor contact ofmetallic connectors and plug-ins, damages to devices, or shortened device lifecycles.

To ensure the normal operating of the devices, equipment rooms must be free of explosive,conductive, magnetoconductive, and corrosive dust. Table 4-13 lists the density limits of dust.

Table 4-13 Dust density limit

Mechanically Active Substance Maximum Value (granule/m3)

Dust granulea ≤3×104 (No visible dust on a desk top withinthree days)

a: diameter ≥ 5 μm

To reduce dust under the density limit, perform the following operations:l Decorate the ground, wall, and ceiling with materials that do not generate dust.

l Place screens on windows and doors to prevent dust.

l Clean equipment rooms and dust screens periodically. The recommended period is onemonth.

l Wear shoe covers and an ESD suit before you enter an equipment room.

4.7 Standards and CertificationsThis section describes the protocol standards, safety and Electromagnetic Compatibility (EMC)standards, industrial standards, and gained certifications of the D120S disk enclosure.

Protocol Standards

Table 4-14 lists the protocol standards that the D120S disk enclosure complies with.

Table 4-14 Protocol standards that the D120S disk enclosure complies with

Name Standard No.

SAS Serial Attached SCSI-1.1 (SAS-1.1)



4-13

Name Standard No.

T10/1562D Rev. 05 Serial Attached SCSI (SAS)

T10/1601D Rev. 07 Serial Attached SCSI Model-1.1 (SAS 1.1)

Serial ATA specification, revision 2.5

SFF 8301 Form Factor of 3.5" disk drives

SFF 8323 3.5" drive form factor with serial connector

SFF 8482 SAS plug connector

SCSI 3 SAM-2: ANSI INCITS 366-2003

SPC-2: ANSI INCITS 351-2001

SBC: ANSI INCITS 306-1998

RAID The RAID book

PICMG3.0 Advanced telecommunications Computing Architecture

PICMG3.1 Ethernet/Fiber Channel Over PICMG 3.0

SNMP trap RFC2578 (SNMP v2)

Safety Specifications and EMC StandardsTable 4-15 lists the safety and electromagnetic compatibility (EMC) standards the D120S diskenclosure complies with.

Table 4-15 Compliant safety and EMC standards

Standard Name Standard No.

North America compliance and safety standards UL 1950

North America compliance and safety standards UL 60950

Europe compliance and safety standards LVD 73/23/EEC

Europe compliance and safety standards EN 60950

USA EMC standard 47 CFR Part 15, and Subpart B

Europe EMC standard EMC Directive 89/336/EEC

Europe EMC standard EN 55022

Europe EMC standard EN 55024

Industry StandardsTable 4-16 lists the industry standards that the D120S disk enclosure complies with.




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Table 4-16 Compliant industry standards

Name Standard No.

Ethernet IEEE 802.3

Fast Ethernet IEEE 802.3u

Gigabit Ethernet IEEE 802.3z

IEEE standard testing interface and boundary scanarchitecture

IEEE 1149.1-2001

Failure modes and effects analysis (FMEA) process IEC 812

Reliability, reparability, and availability predictionstandard

IEC 863


ETSI standard (power supply) ETS 300 132

ETSI standard (noise) ETS 300 753


ETSI standard (grounding) ETS 300 253

ITUT standard (grounding) ITUT K.27

Environment protection ECMA TR/70

Reliability GR-929,Telcordia SR-332

CertificationTable 4-17 lists the certifications that the D120S disk enclosure passes.

Table 4-17 Certification that the D120S disk enclosure passes


CB The CB system (the IEC system for testing and certificating electricalequipment) is an international system operated by the IECEE. Thecertification organizations in the member states of the IECEE performsecurity tests on electrotechnical products based on the IEC standards. Theresults, namely the CB test reports, and the CB testing certificates, areaccredited among the member states of the IECEE.

CCC China compulsory certification (CCC) mainly involves the productsrelated to human health and security, animal and plant life and health,environmental protection, and public security.



4-15


CE Conformite Europeenne. Products that bear the Conformite Europeenne(CE) marking comply with the EMC Directive (89/336/EEC) and the LowVoltage Directive (73/23/EEC) issued by the Commission of the EuropeanUnion.

C-TICK Australian Communications Authority.

RoHS RoHS is a European Union (EU) compulsory standard that is designed toregulate the materials and the technical standard of the electrical andelectronic products. In this way, it does good to human health andenvironment protection.

TUV Based on CB, a globally recognized testing, inspection and certificationorganization offering the highest quality services for a wide range ofindustries worldwide, such as power. Underwriters Laboratories Inc (UL)is a non-profitable product safety test and certification institute.

UL Underwriters Laboratories Inc (UL) is a non-profitable product safety testand certification institute.

VCCI The Voluntary Control Council for Interference (VCCI) is an associationin Japan that requests that electronics manufacturers participate in thecontrol of electromagnetic interference.




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5 Components of the D120S Disk Enclosure

About This Chapter

This chapter describes the components of the D120S disk enclosure, including the systemenclosure, hard disk module, fan module, PEM, and expander module.

5.1 System EnclosureThis section describes the system enclosure of the D120S disk enclosure, including the functions,features, working principles, and signal flows of the system enclosure.

5.2 Hard Disk ModuleThis section describes the functions and features, the panel, and technical specifications of thehard disk module of the D120S disk enclosure.

5.3 Fan ModuleThis section describes the functions and features, the panel, and technical specifications of thefan module of the D120S disk enclosure.

5.4 PEMThis section describes the functions and features, the panel, and technical specifications of thePEM of the D120S disk enclosure.

5.5 Expander ModuleThis section describes the expander module of the D120S disk enclosure, including the functionsand features, working principles and signal flows, panel, configuration parameters, and technicalspecifications.

Oceanspace S2600 Storage SystemHardware Description 5 Components of the D120S Disk Enclosure


5-1

5.1 System EnclosureThis section describes the system enclosure of the D120S disk enclosure, including the functions,features, working principles, and signal flows of the system enclosure.

5.1.1 Functions and FeaturesThis section describes the functions and structure of the system enclosure.

5.1.2 Working Principles and Signal FlowsThis section describes the working principles and signal flows of the system enclosure of theD120S disk enclosure.

5.1.1 Functions and FeaturesThis section describes the functions and structure of the system enclosure.

The S2600 controller enclosure and the D120S disk enclosure have the same hardware structureof the system enclosure. Different components can be inserted to the system enclosure to achieveflexible configuration.

Figure 5-1 shows the appearance of the system enclosure.

Figure 5-1 Appearance of the system enclosure

5.1.2 Working Principles and Signal FlowsThis section describes the working principles and signal flows of the system enclosure of theD120S disk enclosure.

Figure 5-2 shows the working principles and signal flows of the system enclosure of the D120Sdisk enclosure.

5 Components of the D120S Disk EnclosureOceanspace S2600 Storage System



Issue 05 (2011-07-30)

Figure 5-2 Working principles and signal flows of the system enclosure (D120S disk enclosure)

Disk module

5555

55

Expa

nder

mod

ule

A

5

Backplane

6

3

4 13

4

Expa

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mod

ule

B

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6

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PEM

A

Fan

mod

ule

APE

M B

Fan

mod

ule

B

2

2

55

55

5

1 Connects the PEM to the backplane.

2 Connects the fan module to the backplane.

3 Transfers data, control, and clock signals between the expander module and the backplane.

4 Connects to the power socket of the expander module.

5 Transfers data, clock, and power signals between the hard disk module and the backplane.

6 System serial port. It communicates with the SES controller.



5-3

7 SAS uplink expander port. It connects the expander module with the controller.

8 SAS downlink expander port. It connects two expander modules.


The functions of each module in the system enclosure of the disk enclosure are as follows:

l PEM

The PEM supplies power for the controller enclosure, and provides the power informationand key data for users through the IIC.

l Fan module

The fan module is the fan of the storage system. It dissipates heat from the system. Thesystem can control the fan speed through the PWM pin.

l back-end disk module

The back-end disk module is the disk array of the D120S disk enclosure. It comprises 12disks to provide storage services for users. According to different requirements, the RAIDgroup level can be RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10. The back-end diskmodule operates with the S2600 controller enclosure to provide storage capacity for users.

l Expander module

The expander module is classified into two types. The uplink connects with the S2600controller enclosure, and the downlink connects with the next D120S disk enclosure.Currently, one controller enclosure can be expanded to a maximum of seven D120S diskenclosures.

l Backplane

The backplane connects the expander module with the other expander module, the PEM,the fan module, and the disk array through corresponding connectors.

5.2 Hard Disk ModuleThis section describes the functions and features, the panel, and technical specifications of thehard disk module of the D120S disk enclosure.





The hard disk module provides storage capacity for the S2600.




Issue 05 (2011-07-30)


The D120S disk enclosure can be configured with a maximum of 12 SATA hard disks or 12SAS hard disks.

l Each SATA disk module comprises a handle, a disk tray, a SATA disk, and a SATAconversion board.

l Each SAS disk module comprises a handle, a disk tray, a SAS hard disk, and a SASconversion board.

Figure 5-3 shows the hard disk module.

Figure 5-3 Hard disk module

1 Handle 2 Disk tray

3 SATA/SAS hard disk 4 SATA/SAS conversion board


The D120S disk enclosure supports up to 12 hard disks. It supports the following types of harddisks:

l 250 GB, 500 GB, 1 TB, and 2 TB SATA disks with the rotation speed of 7200 rpm/min

l 73 GB, 146 GB, 300 GB, 450 GB, and 600 GB SAS disks with the rotation speed of 15000rpm/min

The hard disks are hot swapped.

5.3 Fan ModuleThis section describes the functions and features, the panel, and technical specifications of thefan module of the D120S disk enclosure.


5.3.2 PanelThis section describes the panel of the fan module.



5-5



The fan module dissipates the heat for the D120S disk enclosure.

The D120S disk enclosure is configured with fan modules in 1+1 redundancy backup mode.

The fan module supports hot swap. Either module can meet the heat dissipation requirement ofthe D120S disk enclosure for the full-load operation for at least two minutes at the temperatureof 5°C to 40°C. Either fan module has two built-in fans. Failure of any fan does not degrade thenormal operation of the D120S disk enclosure.

5.3.2 PanelThis section describes the panel of the fan module.

Figure 5-4 shows the fan module of the D120S disk enclosure.

Figure 5-4 Fan module

1 Spring leaf of the fan module 2 Fan running/alarm indicator

3 Fan handle

NOTE

For the details on the indicators on the fan module, see Table 4-2.


Table 5-1 lists the technical specifications of the fan module.

Table 5-1 Technical specifications of the fan module


Appearance Dimensions 97 mm (length) x 94 mm(width) x 33 mm (height)




Issue 05 (2011-07-30)


Weight 1 kg/fan module

Lead length 300 mm

Number of pins 4

Rated voltage 12 V DC

Operation voltage 7 V to 13.2 V DC

Basic electrical parameter Startup voltage ≤ 7 V DC

Standard operating current 1.2 A

Maximum operating current 1.5 A

Rated power 13.2 W

Maximum powerconsumption

≤ 20 W

Rated rotation speed 4300 rpm

Rotation speed control mode PWM speed control

Speed control mode andcontrol signal

Speed control voltage -0.8 V to 20 V DC

High-level input signalvoltage

2.8 V to 20 V DC

Low-level input signalvoltage

-0.8 V to 0.4 V DC

Basic performance index Operation temperature -10°C to 60°C

Operation humidity 5% RH to 90% RH



5.4 PEMThis section describes the functions and features, the panel, and technical specifications of thePEM of the D120S disk enclosure.


5.4.2 PanelThis section describes the panel of the PEM.




5-7


CAUTIONThe D120S disk enclosure must be configured with PEMs of the same manufacturer and version.

The D120S disk enclosure supports the following two types of PEM:

l AC PEMSupplying power to the D120S disk enclosure when the input voltage ranges from 100 VAC to 127 V AC and 200 V AC to 240 V AC.

l DC PEMSupplying power to the D120S disk enclosure when the input voltage ranges from -48 VDC to -60 V DC.

CAUTIONThe AC PEM and DC PEM cannot be mixed interchangeably in the one S2600 controllerenclosure.

Each D120S disk enclosure can be configured with one or two PEMs.

The two PEMs compose a power system in 1+1 load balance mode. The D120S enclosure canoperate normally with one PEM in the maximum power consumption mode. The PEM supportshot swap. The failure of either PEM does not degrade the normal operation of the D120S diskenclosure.

5.4.2 PanelThis section describes the panel of the PEM.

Figure 5-5 shows the AC PEM of the D120S disk enclosure. Figure 5-6 shows the DC PEM ofthe D120S disk enclosure.

Figure 5-5 AC PEM





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3 PEM indicator 4 PEM fan

5 PEM handle

Figure 5-6 DC PEM

1 PEM spring leaf 2 Power running/alarm indicator

3 Power socket 4 PEM handle

NOTE

For the details on the indicators on the PEM, see Table 4-2.


Table 5-2 lists the technical specifications of the AC PEM. Table 5-3 lists the technicalspecifications of the DC PEM.

Table 5-2 Technical specifications of the AC PEM


Input attribute Input voltage 90 V to 264 V AC

Rated input voltage 100 V to 127 V AC/200 V to240 V AC

Maximum input current l ≤ 9.9 A (the input voltageis from 90 V to 127 V.)

l ≤ 5 A (the input voltageis from 180 V to 240 V.)

Rated input current l ≤ 8.9 A (the input voltageis from 100 V to 127 V.)

l ≤ 4.5 A (the input voltageis from 200 V to 240 V.)

Input voltage frequency 47 Hz to 63 Hz




5-9


Output voltage 11.64 V to 12.36 V DC/4.8 Vto 5.25 V DC

Output current 1 A to 58 A/0 A to 2 A

Output power 700 W

Output efficiency l ≥ 80% (the input voltageis from 90 V to 127 V.)

l ≥ 85% (the input voltageis from 200 V to 240 V.)


75 V±5 V AC


85 V±4 V AC

Output overvoltage 13 V to 14 V DC/5.7 V to 6.5V DC

Current-limiting protectionof the output current

70 A to 80 A/3 A to 6 A

Table 5-3 Technical specifications of the DC PEM


Input attribute Input voltage -48 V to -60 V DC

Maximum input current 24 A

Input surge current 36 A


Regulated voltage precision ±3%/±5%

Ripple noise 50 mV

Cross regulation rate ±3%/±3%

Output power 700 W to 800 W

Output efficiency ≥80%


-35 V DC


-36 V DC

Output overvoltage 13.5 V to 14.5 V DC/6 V to6.8 V DC




Issue 05 (2011-07-30)

5.5 Expander ModuleThis section describes the expander module of the D120S disk enclosure, including the functionsand features, working principles and signal flows, panel, configuration parameters, and technicalspecifications.

5.5.1 Functions and FeaturesThis section describes the functions and features of the expander module.

5.5.2 Working Principles and Signal FlowsThis section describes the working principles and signal flows of the expander module

5.5.3 PanelThis section describes the panel of the expander module.

5.5.4 Configuration ParametersThis section describes the configuration parameters of the expander module.

5.5.5 Technical SpecificationsThis section describes the technical specifications of the expander module.

5.5.1 Functions and FeaturesThis section describes the functions and features of the expander module.

The D120S disk enclosure is connected to the expander module and managed through theexpander module. The expander module is the connection point for data transmission betweenthe D120S disk enclosure and application servers (ASs) and between disk enclosures.

Each D120S disk enclosure is configured with two expander modules. Each module provides aPRI expander port and an EXP expander port with the rate of 4 x 3 Gbit/s.

5.5.2 Working Principles and Signal FlowsThis section describes the working principles and signal flows of the expander module

Figure 5-7 shows the working principles and signal flows of the expander module of the D120Sdisk enclosure.

Figure 5-7 Working principles and signal flows of the expander module

SAS expander chip

Expander module A

Cascaded D120S disk enclosure

Service data flow Management data flow

Serial port

D120S disk enclosure





5-11


The functions of each module in the expander module are as follows:

l SAS expander chip

The SAS expander chip provides 36 expander ports. Twenty-four ports are used to connectdisks of the controller enclosure. Another four ports are used to connect the expanded diskenclosure. Four ports are used to connect the SAS initiator. And the four ports are reserved.The SAS expander chip also provides the management module. The management modulecan detect the running status of the single board through the IIC bus, obtain the relatedinformation about the single board through the logical chip, and manage the rear-end diskmodule through the SAS bus.

5.5.3 PanelThis section describes the panel of the expander module.

Figure 5-8 shows the expander module.

Figure 5-8 Expander module

1 Spring leaf of the expander module 2 Debug serial port

3 Reset button 4 PRI expander port

5 Link indicator of the PRI expander port 6 Alarm indicator of the expander module

7 Power indicator of the expander module 8 Link indicator of the EXP expander port

9 EXP expander port 10 Enclosure ID indicator

5.5.4 Configuration ParametersThis section describes the configuration parameters of the expander module.

Table 5-4 lists the configuration parameters of the expander module.

Table 5-4 Configuration parameters of the expander module


Debug serial port The D120S disk enclosure can be debugged and managedthrough the debug serial port.




Issue 05 (2011-07-30)


Enclosure ID monitor The enclosure ID monitor displays the ID of the D120S diskenclosure. You can log in the ISM or CLI to change the ID ofthe D120S disk enclosure. The changed ID is displayed in theenclosure ID monitor.

5.5.5 Technical SpecificationsThis section describes the technical specifications of the expander module.

Table 5-5 lists the technical specifications of the expander module.

Table 5-5 Technical specifications of the expander module

Parameter Value

Weight 1.4 kg/module.

Power supply mode External power supply. Supporting AC andDC.

Voltage -48 to -60 V DC.

Maximum current 24 A.

Power consumption 10 W to 13.7 W.

Humidity 5°C to 40°C.

Humidity 5% RH to 85% RH.



5-13

6 Device Cables

About This Chapter

This chapter describes the related cables of this device, including power cables, groundingcables, and signal cables.

6.1 Power cables and Grounding cablesThis section describes power cables and grounding cables.

6.2 Signal CablesThis section describes the related signal cables of this device, including network cables, serialport cables, mini SAS cables, and optical fibers.

Oceanspace S2600 Storage SystemHardware Description 6 Device Cables


6-1

6.1 Power cables and Grounding cablesThis section describes power cables and grounding cables.

6.1.1 Power CablesThis section describes the power cables of the S2600 controller enclosure/D120S disk enclosure.

6.1.2 Grounding CablesThis section describes the configured grounding cables of the S2600 controller enclosure/D120Sdisk enclosure.

6.1.1 Power CablesThis section describes the power cables of the S2600 controller enclosure/D120S disk enclosure.

Each AC (or DC) PEM of the S2600 controller enclosure/D120S disk enclosure is configuredwith one AC (or DC) power cable.

The power cable supplies power for the device inside the cabinet. One end of the power cableis inserted to the socket on the controller enclosure or disk enclosure, and the other end connectswith the external power supply.

6.1.2 Grounding CablesThis section describes the configured grounding cables of the S2600 controller enclosure/D120Sdisk enclosure.

Each S2600 controller enclosure/D120S disk enclosure is configured with one grounding cable.The grounding cable is used to improve the security of operating the S2600 controller enclosure/D120S disk enclosure.

6.2 Signal CablesThis section describes the related signal cables of this device, including network cables, serialport cables, mini SAS cables, and optical fibers.

6.2.1 Network CablesThis section describes the network cables to be connected in the storage device.

6.2.2 Serial Port CablesThis section describes the serial port cables to be connected in the storage device.

6.2.3 SAS CablesThis section describes SAS cables to be connected in the storage device.

6.2.4 Optical FiberThis section describes optical fibers to be connected in the storage device.

6.2.1 Network CablesThis section describes the network cables to be connected in the storage device.

The network cable is used in the following two ways:

6 Device CablesOceanspace S2600 Storage System



Issue 05 (2011-07-30)

l The S2600i controller enclosure and the S2600C controller enclosure with the iSCSI hostport communicates with ASs through network cables.– Direct-connection networking

Connects one end of the network cable to the iSCSI host port of the controller enclosureand the other end to the NIC port of the AS.

– GE switch networkingConnects one end of the network cable to the iSCSI host port of the controller enclosureand the other end to the GE switch port. Connects one end of another network cable tothe GE switch port and the other end to the NIC port of the AS.

l The management network port of the controller enclosure communicates with themaintenance terminal through network cables.Connects one end of the network cable to the management network port of the controllerenclosure and the other end to the network port of the maintenance terminal.

Figure 6-1 shows the appearance of the network cable.

Figure 6-1 Network cable

6.2.2 Serial Port CablesThis section describes the serial port cables to be connected in the storage device.

The S2600 controller enclosure communicates with the maintenance terminal through serial portcables.

Connects the RJ-45 end of the serial port cable to the serial port of the controller enclosure andthe DB-9 end to the port of the maintenance terminal.

Figure 6-2 shows the appearance of the serial port cable.

Figure 6-2 Serial port cable



6-3

6.2.3 SAS CablesThis section describes SAS cables to be connected in the storage device.

SAS cable contains mini SAS to SAS cable and mini SAS cable.

The S2600S controller enclosure with the mini SAS host port communicates with ASs throughSAS cables.

l When connecting the mini SAS host port of the controller enclosure to the SAS port of theSAS HBA in the application server, select the mini SAS to SAS cable .

l When connecting the mini SAS host port of the controller enclosure to the mini SAS portof the SAS HBA in the application server, select the mini SAS cable.

mini SAS to SAS cable

The S2600 controller enclosure communicates with the ASs with SAS port through mini SASto SAS cables.

Connects the mini SAS end (with blue tab) of the mini SAS to SAS cable to mini SAS host portof the controller enclosure and the SAS end to the SAS port of the SAS HBA in the ASs.

Figure 6-3 shows the appearance of the mini SAS to SAS cable.

Figure 6-3 mini SAS to SAS cable

mini SAS cable

The mini SAS cable is used in the following two ways:

l The S2600 controller enclosure communicates with the ASs with mini SAS port throughmini SAS cables.

Connects one end of the mini SAS cable to mini SAS host port of the controller enclosureand the other end to the mini SAS port of the SAS HBA in the ASs.

l The S2600 controller enclosure communicates with the D120S disk enclosure through miniSAS cables.

Connects one end of the mini SAS cable to the EXP expander port of the controllerenclosure and the other end to the PRI expander port of the disk enclosure.

Figure 6-4 shows the appearance of the mini SAS cable.




Issue 05 (2011-07-30)

Figure 6-4 mini SAS cable

6.2.4 Optical FiberThis section describes optical fibers to be connected in the storage device.

WARNINGDuring the installation and maintenance of optical fibers or the optical module, never staredirectly into the terminals of the optical fibers or the exit of the optical module, and your eyesshould never be close to the optical fibers or the exit of the optical module.

CAUTIONl The optical module is electrostatic sensitive. Place it in an antistatic and dust-proof

environment during transportation, storage, and use.l Optical fibers and the optical module, which are not in use, must be covered with protective

cap in time. If the optical module has been polluted or has been swapped for many times,clean the optical interface in time.

l Keep the surface of the optical connector clean and protect it from scratches.

l Do not bend, fold, or repair an optical fiber or bend it into a ring with a radius of less than5 cm; otherwise, the optical fiber may be damaged. The damage results in performancedegradation of the system or data loss.

l The modes of optical fibers and optical module include single mode and multiple mode.The mode of the optical fiber and that of the optical module must be consistent. The S2600uses the multiple mode optical fibers and optical module.

The S2600F controller enclosure and the S2600C controller enclosure communicate with ASsthrough multiple mode optical fibers.



6-5

Connects one end of the optical fiber to the FC host port of the controller enclosure and the otherend to the FC HBA port of the ASs.

Figure 6-5 shows the appearance of the multiple mode optical fibers.

Figure 6-5 Multiple mode optical fiber




Issue 05 (2011-07-30)

A How to Obtain Help

If a problem persists in routine maintenance or troubleshooting, contact Huawei Symantec fortechnical support.

A.1 Preparations For Contacting Huawei SymantecTo better solve the problem, you need to collect troubleshooting information and makedebugging preparations before contacting Huawei Symantec.

A.2 How to Use the DocumentHuawei Symantec provides guide documents shipped with the device. The guide documents canbe used to handle the common problems occurring in daily maintenance or troubleshooting.

A.3 How to Obtain Help from WebsiteHuawei Symantec provides users with timely and efficient technical support through the regionaloffices, secondary technical support system, telephone technical support, remote technicalsupport, and onsite technical support.

A.4 Ways to Contact Huawei SymantecHuawei Symantec Technologies Co., Ltd. provides customers with comprehensive technicalsupport and service. For any assistance, contact our local office or company headquarters.

Oceanspace S2600 Storage SystemHardware Description A How to Obtain Help


A-1

A.1 Preparations For Contacting Huawei SymantecTo better solve the problem, you need to collect troubleshooting information and makedebugging preparations before contacting Huawei Symantec.

A.1.1 Collecting Troubleshooting InformationYou need to collect troubleshooting information before troubleshoot.

A.1.2 Making Debugging PreparationsWhen you contact Huawei Symantec for help, the technical support engineer of HuaweiSymantec might assist you to do certain operations to collect information about the fault orrectify the fault directly.

A.1.1 Collecting Troubleshooting InformationYou need to collect troubleshooting information before troubleshoot.

You need to collect the following information:l Name and address of the customer

l Contact person and telephone number

l Time when the fault occurred

l Description of the fault phenomena

l Device type and software version

l Measures taken after the fault occurs and the related results

l Troubleshooting level and required solution deadline

A.1.2 Making Debugging PreparationsWhen you contact Huawei Symantec for help, the technical support engineer of HuaweiSymantec might assist you to do certain operations to collect information about the fault orrectify the fault directly.

Before contacting Huawei Symantec for help, you need to prepare the boards, port modules,screwdrivers, screws, cables for serial ports, network cables, and other required materials.

A.2 How to Use the DocumentHuawei Symantec provides guide documents shipped with the device. The guide documents canbe used to handle the common problems occurring in daily maintenance or troubleshooting.

To better solve the problems, use the documents before you contact Huawei Symantec fortechnical support.

A.3 How to Obtain Help from WebsiteHuawei Symantec provides users with timely and efficient technical support through the regionaloffices, secondary technical support system, telephone technical support, remote technicalsupport, and onsite technical support.

A How to Obtain HelpOceanspace S2600 Storage System


A-2 Huawei Symantec Proprietary and ConfidentialCopyright © Huawei Symantec Technologies Co., Ltd.

Issue 05 (2011-07-30)

Contents of the Huawei Symantec technical support system are as follows:l Huawei Symantec headquarters technical support department

l Regional office technical support center

l Customer service center

l Technical support website: http://www.huaweisymantec.com

You can query how to contact the regional offices at http://www.huaweisymantec.com.

A.4 Ways to Contact Huawei SymantecHuawei Symantec Technologies Co., Ltd. provides customers with comprehensive technicalsupport and service. For any assistance, contact our local office or company headquarters.

Huawei Symantec Technologies Co., Ltd.

Address: Building 1B,The West Zone Scinece Park of UESTC,No.88,Tianchen Road,Chengdu,611731 P.R.China

Website: http://www.huaweisymantec.com

Customer Service Center

Phone: 4008882333

Huawei Symantec Service fax: 0086-28-87897555

Service E-mail: [email protected]

Oceanspace S2600 Storage SystemHardware Description A How to Obtain Help


A-3

B Glossary

A

Active networkport

The service port that is working currently on the AS.

Active/ActiveMode

The I/O operation can be performed on either of the two controllers.

Alarm buzzer A component of the controller enclosure. When a critical fault occursin the Oceanspace storage system, the alarm buzzer can generate somebuzz.

Applicationserver

The computer system that is connected to the storage system, storesdata, and implements I/O access.

Applicationserver LUN

The LUN that is mapped from storage devices to the application server.

Array LUN To differentiate the number between the device LUN and the host LUN.

B

Back-end diskport

The port for the connection between the controller enclosure and thedisk enclosure.

Baud rate The maximum rate of signal state changes per second on acommunications circuit. In low-speed communications, each signalstate corresponds to a code bit, then the baud rate and the bit rate are thesame, that is, the reciprocal of code bits in one second.

Bit error rate The percentage of bits that have errors relative to the total number ofbits received in a transmission.

Oceanspace S2600 Storage SystemHardware Description B Glossary


B-1

Boundary scan A test methodology that uses shift registers in the output connections ofintegrated circuits. One IC often is connected to the next. A data patternis passed through the chain and the observed returned data streamaffected by the circuit conditions gives an indication of any faultspresent. The system is defined under IEEE standard 1149.1 and is alsooften known as JTAG (Joint Test Action Group).

Browser / Server An architecture that defines the roles of browser and server, where thebrowser is the service request party and the server is the service provider.

C

Cache A special area of memory, managed by a cache controller, whichimproves performance by storing the contents of frequently accessedmemory locations and their addresses.

Cache hit ratio The ratio of directly accessed I/O from Cache to all the I/O operationduring the read operation.

Cache prefetchstrategy

According to the operation in which data has been read or is being read,the required data is read from a disk into the cache in advance.

CALL HOME The function that devices send the detected critical events, such as faults,to maintenance engineers through an E-mail or a short message.

Captive screw After the screw is loosened, screw caps and bolts do not fall off the mainbody.

Cascade Connect the Oceanspace storage system to more disk enclosuresthrough connection cables, thus expanding the capacity of theOceanspace storage system.

CHAP Challenge handshake authentication protocol. An authenticationprotocol based on the password. This protocol checks that a user has theright to access a system by using a challenge.

CloneGroup The clone group includes one master LUN and at most eight slaveLUNs.

Coffer A technology for ensuring data security and integrity in theOceanspace storage system. The hard disks in slots 0 to 3 serving ascoffers, which store the data of system configuration, data of alarm logs,and the data in the cache that is not written to the disk when the systempower is off for emergency and alarm log data.

Coffer disk Physical storage media. It refers to the hard disks in slots 0 to 3 of thecontroller enclosure.

Command device Command device for Oceanspace Command Line Interface.

Connected LUN Logically consecutive LUNs are connected through connectingmultiple LUN space.

B GlossaryOceanspace S2600 Storage System


B-2 Huawei Symantec Proprietary and ConfidentialCopyright © Huawei Symantec Technologies Co., Ltd.

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Consistency check LUN consistency check is an advanced maintenance function of thecontroller. Through the consistency check, the controller can check theconsistency of data on arrays in advance, that is, the validity andintegrity of data.

Constant prefetch A cache prefetch strategy. The size of the data to be prefetched is thesize as set. This strategy applies to the applications that require readingdata of a fixed size in a certain order. An example is the streaming mediademanded by multiple subscribers who use the same bit rate.

Controllerenclosure

It is the core component of the Oceanspace storage system, and is mainlyresponsible for the storage service. A controller enclosure consists ofthe controller, hard disk, interface card, power entry module (PEM)/fanmodule, battery, and dual in-line package (DIP) switch board.

Conversion board A circuit board in the Oceanspace storage system for the conversion ofdisks ports.

Cookie A technology that allows a Web site server to store a bit of data in thedisk or memory of a client or read data from the disk of a client.

Copyback The process of copying the data from the hot spare disk back to theprevious disk when the faulty member disk is restored or replaced by anew one.

Copying The status of LUN copy. The task of LUN copy is being executed.

Create RAIDgroup

To organize free disks into a RAID group with a certain RAID level.

Created The status of LUN copy. The status of creating LUN copy and yet notstarting coper copy.

Cyclicredundancy check

CRC consists of a great number of bits computed as the data to beprotected and append to the data.

D

Data disk The disk for saving service data in RAID groups.

Defragment The process of rewriting LUN data on disks, which helps to continuethe unoccupied free space among LUNs.

Degraded RAIDgroup

When member disk in a RAID group fails, part or all of the redundancyis lost

Delete RAIDgroup

To delete a RAID group so that member disk in a RAID group becomesa free disk.

DIP switch board It is used to adjust the FC cascading rate and FC disk rate, and can mutethe alarm buzzer.

Dirty page The data that is stored in only the cache but not written into disks.

Disk array A set of disks from one or more commonly accessible disk subsystem,combined with a body of control software. The control software presentsthe disks' storage capacity to hosts as one or more virtual disks.



B-3

Disk location Locate a hard disk, that is, determine the enclosure number and slotnumber of the hard disk in the Oceanspace storage system.

Disk enclosure It consists of the following parts: expander board, hard disk, PEM/fanmodule, and DIP switch board. System capacity can be expanded bycascading multiple disk enclosures.

Disk utilization The percentage of used capacity in the total available capacity.

Dynamic LUN During the operations of defragment, expanding the member disk ofRAID group, modifying the stripe unit size and transferring the level ofRAID group dynamically, create a temporary LUN that can help datatransfer.

E

Expand themember disk ofRAID groupdynamically

To add member disk in a RAID group without interrupting the normalservices of RAID group.

Expander module A component used for expanding.

Expansion masterLUN

The first LUN composing the connected LUNs is called expansionmaster LUN.

Expansion slaveLUN

In addition to the expansion master LUN, the other LUNs composingthe connected LUNs are expansion slave LUNs.

External LUN The LUN that is located in other arrays, except the array of the LUNcopy.

F

F_Port A port of the fiber channel on the optical network. Each F_Port of thefiber channel on the optical network connects to the N_Port of a certainnode. F_Port is a kind of data frame route port. This kind of port istransparent for its upper-layer protocol.

Failback The recovery process of transferring the load of the faulty componentto the backup components.

Failed RAIDgroup

The number of failed member disk in a RAID group exceeds themaximum number, which causes data loss.

Failover The system component with peer functions replaces a faulty component.For example, if a controller fails, the failover process is started, that is,another normal controller takes over the I/O load of the faulty controller.

Failure tolerance The storage system can provide storage resources normally (systemperformance may be compromised) when its one or multiplecomponents fail.




Issue 05 (2011-07-30)

Fibre channelarbitrated loop

A form of Fibre Channel network in which up to 126 nodes areconnected in a loop topology. Nodes connected to Fibre ChannelArbitrated Loop arbitrates for the single transmission that can occur theloop at any instant.

Field replaceableunit (FRU)

A module or component which will typically be replaced in its entiretyas part of a field service repair operation. Any entity that can be replacedby a user in the field. Examples of this type of FRU might include:backplane (the Shelf housing, for all practical purposes), PEM/fanmodule, optical module, and battery module. (Not all FRU supports hotswapping.)

Firmware The program that is embedded in a programmable non volatile memory.

Fragment The free physical space that has not been divided among different LUNson a disk.

Free disk A hard disk which is available in the Oceanspace storage system.

Free hot sparedisk

A hot spare disk that is available.

Front-end hostport

The port on the controller enclosure to connect to the application serverand transmit service data. There are three types of the front-end hostport: SAS, FC and iSCSI.

Full LUN copy To synchronize the original LUN data to the target LUN.

G

Gateway The entrance node on another network.

Gateway binding A mode of binding an application server and the network entrance nodeit is located in.

Global hot sparedisk

A type of hot spare disk. A global spare disk can serve as the spare diskfor multiple RAID groups of an array while a local hot spare disk canonly serve as the spare disk for only one RAID group.

GSM Modem A wireless modem used to send the information about alarms.

H

Hard disk tray The tray that bears the hard disk.

Heartbeat cable The heartbeat cable is a dedicated line on the backplane. It can checkthe running state of the remote controller in real time. Once the runningcontroller is in the abnormal state, the remote controller can use theheartbeat cable to check the related state and take proper measures.

High watermarks The high level of the dirty page stored in cache. When the amount ofthe dirty page in cache reaches the high level, cache begins to store thedirty page into disks.



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High-lowwatermarks

The low level and high level of the dirty page stored in cache. When theamount of the dirty page in cache reaches the high level, cache beginsto store the dirty page into disks. When the amount of the dirty pagereaches the low level, cache stops storing the dirty page into disks.

Host The host displayed in the Oceanspace ISM interface is a created virtualhost. After a port is added to the host, the host can correspond to aphysical application server.

Host port module A module that bears the various types of host ports, for example, SAShost port, FC host port, and iSCSI host port.

Hot backup/Online backup

A form of backup in which the data being backed up may be accessedby applications during the backup.

Hot swap In a running system, inserting or removing a blade does not affectnormal running of the system.

Hot spare disk The disk that is used to replace the damaged member disk in a RAIDgroup. A spare disk carries the data that is saved on faulty disks.

Hot spare diskreconstruction

A function of the Oceanspace storage system. It refers to the process ofrestoring the data from the faulty member disk in a RAID group to thespare disk.

LUN copy The function of copying the original LUN data to one or multiple targetLUNs in the full or incremental mode.

Virtual snapshot Virtual snapshot creats a usable copy of a data object. It includes themapping of the data object in ponit time.

I

I/O Data movement process between memory and peripheral devices in thecomputer system. I/O is a collective name, indicating the operationsreading data into the memory and writing data to other places fromcomputer memory.

Inbandmanagement

A method of transmission between the management control informationon the network and the bearer service information on the user networkthrough the same logical channel. Inband management enables users tomanage disk arrays through commands. Management commands aresent through the service channel, that is, the I/O read-and-write channel.The advantage is quick and stable transmission, which requires no othermanagement network port.

Inconsistentstripe

The protection of the check data block in a redundancy group stripe forthe protected space in the stripe is invalid.

Incremental LUNcopy

When incremental LUN copy is initialized, the original LUN data iscopied to the target LUN. When incremental LUN copy is startedafterwards, only the difference between the original LUN and the targetLUN is copied synchronously, instead of all the LUN data.




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Initialize The process of writing 0 bits in the data area on the logical drive andgenerating related parity bits so that the logical drive can be in the readystate.

initiator A system component that can initiate an I/O operation on an I/O bus oron a network.

Intelligentprefetch

A cache prefetch strategy. The system software calculates a proper sizeof prefetched data. This strategy applies to a read application involvinga single bit stream or to the situations where you do not know whetherthe data is read in a certain order. An example is reading or writing afile.

Internal LUN The LUN that is located in the array of the LUN copy.

iSCSI host port A port which is on the controller enclosure connects to the AS. The porttransmits service data (used in the network and bearing the SCSIprotocol in the IP packet).

L

Link A physical connection between two nodes of a network.

Load balance A method of adjusting the system, application components and data toaveragely distribute the applied I/O or computing requests for physicalresources of the system.

Logical unit The entity is located inside the SCSI object, and can execute I/Ocommands. After a SCSI I/O command is sent to an object, the logicunit inside the object executes this command. Usually, each SCSIphysical disk has one logic unit. A tape drive and array controller mayhave multiple logic units, which process different I/O commands. Eachlogic unit inside an array controller corresponds to a virtual disk.

Logical unitnumber

The SCSI identifier of the internal logical unit of a target.

Loose coupling A system based on messages in which the client and the remote servicesdo not know how the peer side is realized. The communication betweenthe client and the services is based on message architecture. As long asthe messages comply with the negotiated architecture, the realization ofthe client or services can be changed as required without damaging thepeer side.

Low watermarks The low level of the dirty page stored in the cache. When the amountof the dirty page in the cache reaches the low level, cache stops storingthe data in cache into disks.

LUN expansion The process of forming the connected LUN by connecting one LUN toanother LUN.

LUN format The process of preparation for enabling LUNs. During the process,necessary information is written to member disks where LUNs arelocated.



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LUN mapping The Oceanspace storage system maps LUNs to ASs so that the ASs canaccess the storage reorganization.

M

Maintenanceterminal

The computer that is connected through a serial port or managementnetwork port and maintains the Oceanspace storage system.

Managementnetwork

An entity that provides a means to transmit and process the informationrelated to network management.

Managementnetwork port

The network port on the controller enclosure that is connected to themaintenance terminal. It is provided for the remote maintenanceterminal.

Medium scanning A background program that is run by controllers and provides thefunction of detecting disk errors. The medium scanning program detectsand reports errors to the event log module.

Member disk A disk in a redundant array of inexpensive disks (RAID) group in theOceanspace storage system.

Member diskreconstruction

A function of the Oceanspace storage system. It refers to the process ofrestoring the data from the faulty disk to the new disk after you replacea faulty member disk in a RAID group with a new one.

Mirroring A form of storage array in which two or more identical copies of dataare maintained on separate media. This prevents data loss due to diskerrors.

Mirroring group In a group of RAID at the RAID 10 level, the member disks that aremirrors of each other are known as a mirroring group.

Modify the stripeunit sizedynamically

To modify the stripe unit size without interrupting the normal servicesof LUN.

N

N_Port A port that connects a node to the optical network or another node. TheN_Port of the node connects to the F_Port of the optical network or theN_Port of another node. The N_Port handles the creation and detectionof a message unit and input or output the packages which connect to thesystem. The N_Port is the end point between points.

Native devices The application server LUN viewed through the device managementsoftware on the application server. The application server can accessthe same array LUN through multiple physical paths. Therefore, for thesame array LUN, the number of the application server that is displayedas the local device is consistent with the number of physical paths.




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NL_Port A special port that is on the fiber channel arbitrated loop. The NL_Portand the N_Port have the same function, logical structure, and ability forprocessing information; however, the NL_Port is connected to thearbitrated loop and the N_Port is connected to the optical network. Someport products can be used as an N_Port or an NL_Port based on thenetwork that they are connected to. When the NL_Port is in passive loopmode, the NL_Port must copy and transmit the frame.

O

Online LUNexpansion

A process of expanding LUN capacity online without interruptingservices.

Original LUN The LUN where the original data of the copied LUNs is located.

Outbandmanagement

A management mode used during outband networking. In the outbandmanagement mode, the management and control information of thenetwork and the bearer service information of the user network aretransmitted through different logical channels.

Overloadprotection

The measure of installing addition protection devices in case that theoverloaded main power lines cause damage to the protector as result ofoverheat.

Owningcontroller

For a LUN, the user configures the owing controller, that is, specifiedthe created LUN to a certain controller. When the owning controller ofthe LUN is invalid, another controller manages the LUN automatically.When the owning controller of the LUN is restored, the originalcontroller manages the LUN again.

P

Parity disk The disk for saving check data in RAID groups.

PEM/fan module The PEM/fan module consists of power supply, fans, power switches,and power sockets.

Physical path The actual path from the HBA card of the application server to the front-end host port of storage arrays. Regardless of switches on the path, thephysical path is only decided by the corresponding relation between thehost HBA card and the array port.

Port module Port module connects various types of front-end host port, such as thefront-end host ports of SAS, FC and iSCSI.

Power failureprotection

When the external power failure occurs, the alternating circuit (AC)power entry module in the Oceanspace storage system can use thebattery to supply power. This ensures that dirty page in cache can bewritten into the coffer safely and avoids data inconsistency caused bydata lost.

Primary StorageController

The controller which plays a leading role in controlling the managementis primary storage controller. It can perform relevant managementoperations on the controller enclosure.



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Primary/Secondaryswitchover

A procedure during which the two controllers of the Oceanspace storagesystem change their master/slave states.

Prior controller For the application server LUN, prior controller means that the workingcontroller is the owner controller of the corresponding array LUN.

Pseudo devices The pseudo devices used by users after the multi-path managementsoftware shields local devices.

R

RAID level The application of different redundant types in the logical drive. TheRAID level can improve the fault tolerance and performance and reducethe available capacity of the logical drive. You must specify a RAIDlevel for each logical drive.

Reconstruct To restore the data in a member disk, when the member disk in a RAIDgroup is faulty.

Reconstruct hotspare disk

To restore the data from the faulty member disk in a RAID group to thespare disk.

Reconstructmember disk

To restore the data from the faulty disk to the new disk after you replacea faulty member disk in a RAID group with a new one.

Reconstruction A function of the Oceanspace storage system. It refers to the process ofrestoring the data saved in the faulty member disk in a RAID group.

Redhat packagemanager

Redhat package manager widely applied in Linux.

Redundancy The inclusion of extra components of a given type in a system (beyondthose required by the system to carry out its function) for the purposeof enabling continued operation in the event of a component failure.

Redundant Arrayof IndependentDisks

A family of techniques for managing multiple disks to deliver desirablecost, data availability, and performance characteristics to hostenvironments.

Redundant copy When the system monitors that a member disk in the RAID groups isabout to fail, the system copies the data in the disk to a hot spare disk.This technology is called redundant copy.

Repairinconsistent stripe

To correct the invalid protection of the check data block in a redundancygroup stripe for the protected space in the stripe.

S

Script A collection of data statements used to perform an operation.




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SecondaryStorageController

In relation to the primary storage controller, the secondary storagecontroller is the backup for the primary storage controller. When theprimary storage controller fails, the secondary controller can be replacedto be the primary storage controller and performs managementoperations on the controller enclosure.

Serial port An input/output location (channel) that sends and receives data to andfrom a computer's CPU or a communications device one bit at a time.Serial ports are used for serial data communication and as interfaceswith some peripheral devices, such as mouse and printers.

Service data Data which is saved in data disk. Service data is the data source forcomputing check data in parity disk.

SFP opticalmodule

A component that can make data conversion between optical signalsand electrical signals and that can receive and transmit data.

Simple networkmanagementprotocol (SNMP)

An internet engineering task force(IETF) protocol used to monitor andmanage the systems and devices on a network. The monitored andmanaged data is defined by the management information base(MIB).The protocol supports the following functions: data request, dataretrieval, data setting or data writing, and trap.

Single pointfailure

Since some components or channels are not redundant, the failure of adevice or component causes the breakdown of all devices orcomponents.

Smooth expansion A process of expanding capacity online without interrupting services.

Snapshot To create point-in-time snapshot for the original LUN of LUN copy.Only incremental LUN copy supports this operation. After LUN copy,data of the target LUN is consistent with that of the original LUN createdin point time.

Snapshot copy A copy of snapshot, which is also a virtual snapshot.

Snapshot LUN The LUN is a virtual device, the data of which is decided on the datathat is activated in point time.

Standby networkport

In relation to the active network port, the standby network port is aredundant network port on an AS. When the active network port fails,the standby network port is activated to work.

Storage controller The component performs the following functions: operationconversion, RAID, LUN mapping, disk-striping setting, and otherservice and fault alarm. It consists of the controller board and portmodule.

Storage system An integrated system. It consists of the following parts: controller,storage array, host bus adaptor, physical connection between storagedevices, and all control software.

Streaming media A transmission mode in which data is consumed (read, listened to, orwatched) while it is being sent.



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Stripe The process of dividing the consecutive data into the same-sized datablocks and writing the data on each block into different disks. Thistechnology provides a faster read/write speed than a single disk canprovide.

Stripe depth The number of blocks in a strip in a disk array which uses striped datamapping. Also, the number of consecutively addressed virtual diskblocks mapped to consecutively addressed blocks on a single memberextent of a disk array.

Stripe unit The physical extent block that consists of stripes in each physical extentof a redundancy group.

Stripe verify To verify whether the check data block in a redundancy group stripeprotects the protected space in the stripe.

Subnet mask The technology used by the IP protocol to determine where networksegment packets are destined for. The subnet mask is in binary format.Stored in a client, server, or router. The subnet mask matches the IPaddress.

System bus A mechanism of the computer system to achieve connections betweendevices. It is characterized by the signal transmission between twodevices on the bus. One device sends commands and data and the otherdevice receives commands and data. Only one transmission can beoperated on the bus at any time. Transmission requests of each deviceare ranked according to their priorities.

T

target A system component that can receive SCSI I/O operation commands.

Target LUN The target for LUN copy.

Periodic snapshot Create a virtual snapshot of the original LUN in timing.

topology The logical layout where computer systems and network componentsare interconnected with one another. The topological structure gives theinterconnection relationship among the components from the viewpointof communication, but the topological structure does not specify theexact locations of components and the interconnection mode.

Transfer the levelof RAID groupdynamically

To transfer the level of RAID group dynamically without interruptingthe normal services of RAID group.

Trap A type of SNMP message that indicates the occurrence of an event. Thistype of message is transmitted to the received through UDP. Thetransmission process is not completely reliable.




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Trunk It refers to port trunking which aggregates multiple physical ports intoa logical path through setting configuration software. By combining thebandwidth of multiple ports, the bandwidth between switches andnetwork nodes are expanded and the ports are provided an whollyoccupied bandwidth with the speed several times higher than anindependent port.

U

Unload slave LUN The process of unloading the last slave LUN from the connected LUNs.

Used hot sparedisk

A hot spare disk that is in use.

User interface The interface on which users enter commands for operation.

V

Variable prefetch A cache prefetch strategy. The size of the data to be prefetched is themultiple for prefetching multiplied by the length of a read command.This strategy applies to the applications that require reading data ofvariable size in a certain order or to the situations where multiplesubscribers read data concurrently but no fixed prefetch size can be set,because the amount of pre-read data cannot be judged. An example isthe streaming media demanded by multiple subscribers who usedifferent bit rates.

W

Waiting The status of LUN copy. Because the number of LUN copy that isprocessed simultaneously reaches the maximum that the systemsupports, the current LUN copy must wait in line.

Workingcontroller

The controller used by the array LUN to read and write a disk.

Write hole A potential data corruption problem for parity RAID technologyresulting from any array failure while application I/O is outstanding,followed by an unrelated member disk failure (some time after the arrayhas been returned to service). Data corruption can occur if member dataand parity become inconsistent due to the array failure, resulting in afalse regenerating when data failed member disk is subsequentlyrequested by an application.

Write-back cache A cache technology. When the write operation is completed, the datacontinues to be stored in the cache and therefore, the operation of writingthe data to disks will be delayed. No need to access disks during eachwrite operation.

Write-back cachemirroring

A cache technology. Data is written to the local cache and at the sametime written to the opposite cache.



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Write-throughcache

A cache technology. Data is written to disks. And only when the datais safely written to disks, the procedure of write requests can be ended.Disks need to be accessed during each write operation.

Z

Zone In the fiber channel, a collection of the N_Port or the NL_Port whichcan communicate with each other in the optical network. Only theN_Port or the NL_Port in the same partition can communicate with eachother through the optical network.




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C Acronyms

A

ATA Advanced Technology Attachment

AS application server

B

BBU Backup Battery Unit

C

CLI Command Line Interface

D

DAS Direct Attached Storage

E

EMC Electromagnetic Compatibility

F

FC Fiber Channel

G

GUI Graphical User Interface

I

Oceanspace S2600 Storage SystemHardware Description C Acronyms


C-1

IE Internet Explorer

IEC International Electrotechnical Commission

IP Internet Protocol

iSCSI Internet Small Computer Systems Interface

L

LUN Logical Unit Number

M

MTTP Mean Time To Repair

R

RAID Redundant Array of Independent Disks

RH Relative Humidity

RoHS Restriction of the use of certain hazardous substances inelectrical and electronic equipment

S

SAN Storage Area Network

SAS Serial Attached SCSI

SATA Serial ATA

SCSI Small Computer Systems Interface

SMB Small and Medium Businesses

SNMP Simple Network Management Protocol

U

UL Underwriters' Laboratories

C AcronymsOceanspace S2600 Storage System


C-2 Huawei Symantec Proprietary and ConfidentialCopyright © Huawei Symantec Technologies Co., Ltd.

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Documents

Oceanspace S2600 Storage System Hardware Description-(V100R001_05)