System Storage TM © 2007 IBM Corporation IBM System Storage™ DS3000 Series Jüri Joonsaar 30.10.2008 Tartu

System StorageTM

© 2007 IBM Corporation

IBM System Storage™

DS3000 Series

Jüri Joonsaar30.10.2008 Tartu


System StorageTM

IBM SystemsCustomer Presentation

IBM System Storage DS3300iSCSI host interface disk system

IBM System Storage DS3300iSCSI host interface disk system

IBM System Storage DS3400FC host interface disk systemIBM System Storage DS3400

FC host interface disk system

IBM System Storage DS3200SAS host interface disk system

IBM System Storage DS3200SAS host interface disk system

DS3000 Series


System StorageTM


Redundant, hot-swappable components

Intuitive DS3000 Storage Manager software

Support for up to 32 Storage Partitions

Online capacity expansion up to 48 drives with EXP3000s

2U enclosure supporting up to 12 SAS and/or SATA drives

Support for FlashCopy and VolumeCopy

Dual-active RAID controllers with mirrored, battery-backed cache

DS3000 Series - Common Features

Supports tiered storage with SAS and SATA intermix support

Telco model supports -48v DC power supplies


System StorageTM


DS3000 Enclosures

DS3200, DS3300 or DS3400

Controllers SAS and/or SATA

drives

Power/cooling

DS3200

DS3300

DS3400


System StorageTM


DS3200 – A Closer Look

• One or three 3-Gbps SAS host ports per controller• Each port is a 3-Gbps x4 “wide” link

3 SAS host port per controller model

SAS host portsEthernet

management port

Diagnostics port for servicing

SAS expansion port

Power Supply / Cooling


System StorageTM



• Two 1-Gbps iSCSI host ports per controller

iSCSI host ports SAS expansion port

Ethernet management port

Diagnostics port for servicingDisabled SAS portPower Supply / Cooling


System StorageTM



• Two 4-Gbps FC host ports per controller

FC host portsEthernet

management port

Diagnostics port for servicing

SAS expansion port

Power Supply / Cooling Disabled SAS port


System StorageTM


DS3000 Host Cabling

FC SAN attachIP SAN attach

Direct attach

DS3400DS3300DS3200

Direct attach


System StorageTM


DS3000 Storage Manager

Based on 6th generation DS4000 Storage Manager code

Task-oriented user interface is intuitive

and simple

Supports RAID levels 0, 1, 3, 5, 6 and 10

Summary page is the “landing page” providing an “at-a-glance” portal-view of the system

Recovery Guru and email diagnostic alerts

Initial Setup Tasks dialog box provides

six steps to setting up the disk system


System StorageTM


Benefits of Premium Features

Storage Partitioning• Allows the sharing of capacity across multiple servers• User can define which server(s) can have access to specific data

FlashCopy• Supports utilization of separate data copies, for a variety of uses

such as hot backups or application testing • No affect to production data – remains online accessible• Instantaneous

VolumeCopy• Allows for redistribution of data from older, slower disk drives to

faster and/or higher capacity drives• Optimizes application performance and/or capacity• Complete separate physical copy of data that can be used for

analysis or testing with no effect on production data


System StorageTM


LUN0

LUN1

LUN2

LUN0

LUN1

LUN0

LUN1

Logicalpartition

A

Logicalpartition

B

Logicalpartition

C

unmapped volumes

Host A Host BHost

Group C

What is Storage Partitioning?

• A logical unit consisting of one or more volumes that can be accessed by a single host or shared among hosts

• One or more volumes are mapped to an individual host or host group

• This volume-to-LUN mappingdefines what host or host group will have access to the volume

• Partition access is maintainedat the controller level


System StorageTM


A point-in-time image can be created in seconds

What is FlashCopy?

• A point-in-time (PiT) image of a logical drive

• Logical equivalent of a physical copy

• Features:• Instantaneous copy• Requires less disk space than a full

copy• Map-able to any host • Can be read from, or written to

• Primary uses:• PiT backup image• File restoration• Data mining / analysis

BaseLogical Drive

Physical

FlashCopy Logical Drive

FlashCopyRepository

Logical

C’

A B CA B C

C’


System StorageTM


What is VolumeCopy?

• Complete (byte-by-byte) PiT replication of one logical drive (source) to another (target) within a storage system

• Target logical drive also referred to as a clone

• Eliminates I/O contention on the primary logical drive

• Primary uses:• Full PiT data set available for

analysis, mining, testing, backup• Migrating data between

storage tiers

Production Server Analysis Server

PiTCloneSource

logical drive

VolumeCopy

Fast copy of data with no server cycles


System StorageTM


Selecting A Drive Type

• Understand customer’s requirements• Highest performance or highest utilization. • Best $/GB or balanced price/performance.

• Understand application requirements• Highest IOPS or highest MB/s. • Heavy usage data or static data.

• Understand drive characteristics• Time to data• Data transfer rate


System StorageTM


Understanding Performance

Two primary metrics

• IOPS • Measures random, small-block I/O• Transactional applications such as OLTP,

databases, Exchange

• MB/s • Measures sequential, large-block I/O• Data-intensive applications such as

rich media, 3D modeling, simulation, high performance computing


System StorageTM


IOPS

• IOPS measures random, small-block I/O• Key drive-based performance enablers:

• Seek time, latency, rotational velocity, command queuing, number of drives

• IOPS performance is heavily dependent on the number and type of disk drives

• SAS drives have faster seek time, lower latency, faster rotational velocity, and better command queuing compared to SATA

• Drive-limited configurations can result in similar performance between systems with very different maximum capabilities

FC

SAS

SATA


System StorageTM


Throughput

• MB/s measures sequential large-block I/O

• Key drive-based performance enablers: • Data transfer rate, maximum I/O transfer

size, command queuing

• Throughput rates are heavily dependent on the internal controller bandwidth

• Maximum throughput rates can typically be reached with a small number of disk drives

• SATA delivers about 66% of SAS’s drive-level performance

FC

SAS

SATA


System StorageTM


Application Access Patterns

Read intensive

Write intensive

I/O intensive

Throughputintensive

Random access

Sequential access

OLTP ● ● ● ●

Data warehouse ● ● ●

System (SCP) ● ● ●

File serving ● ● ●

Medical imaging ● ● ● ●

Web / Internet ● ● ●

Multimedia / video ● ● ●

Document imaging ● ● ●

Virtualization ● ● ● ●

CAD/CAM ● ● ●

Backup / recovery ● ● ●

MB/s


System StorageTM


Application Access Patterns

Read intensive

Write intensive

I/O intensive

Throughputintensive

Random access

Sequential access

OLTP ● ● ● ●

Data warehouse ● ● ●

System (SCP) ● ● ●

File serving ● ● ●

Medical imaging ● ● ● ●

Web / Internet ● ● ●

Multimedia / video ● ● ●

Document imaging ● ● ●

Virtualization ● ● ● ●

CAD/CAM ● ● ●

Backup / recovery ● ● ●

IOPS are best served by SAS drives

MB/s an option for SATA drives


System StorageTM


Tiered Storage Solution of Choice

• The DS3000 series can cost effectively support an organization’s entire range of data capacity requirements in a single disk system

Drive type Throughput RPM Capacity

SAS

3 Gbps

15,000

73 GB

146 GB

300 GB

SATA

3 Gbps

7,200

500 GB

750 GB

1.0 TB*

* Excludes BladeCenter Boot Disk System

21 © 2008 IBM Corporation

Performance Comparisons

DS3200 DS3300 DS3400

Random Performance - IOPS

Cache-Based Reads 92,000 64,000 110,000

Disk-Based Reads

Disk-Based Writes

Throughput Performance – MB/s

Cache-Based Reads

Disk-Based Reads

Disk-Based Writes

Drives Used for Benchmark 48

Notes: 1. SAS Drives, benchmarked with dual controllers

2. Performance results achieved under ideal circumstances in a benchmark test environment. Actual customer results will vary based on configuration and infrastructure components.



DS3200 DS3300 DS3400



Disk-Based Reads 22,000 22,000 22,000

Disk-Based Writes 4,500 4,200 4,500


Cache-Based Reads

Disk-Based Reads

Disk-Based Writes




Beware, this is “best case.” In the real world, unless you have dedicated infrastructure,you will find somewhat slower IOPS, due to iSCSI network contention.

Disk performance about equal



DS3200 DS3300 DS3400



Disk-Based Reads 22,000 22,000 22,000

Disk-Based Writes 4,500 4,200 4,500


Cache-Based Reads 1,450 455 1,600

Disk-Based Reads 900 380 925

Disk-Based Writes 320 300 320




Disk Reads ~ 42%


System StorageTM


DS3000 Interoperability Matrix

• DS3000 MTMs & Options covered by the matrix

• What comes in the box with the system

• Supported HW & SW options by DS3000 MTM

• Operating System Support• Server Support• HBA Support• Fabric Support• HDD Support• Available ServicePac Options

Documents

System Storage TM © 2007 IBM Corporation IBM System Storage™ DS3000 Series Jüri Joonsaar 30.10.2008 Tartu