ibm system storage™ ds3500 express - ibm - united states · pdf filenext generation...

© 2010 IBM Corporation

IBM System Storage™DS3500 Express

Customer Presentation

February 2010


Your Business Challenges

Increased reliance on consolidated storage

Productivity and competitiveness relies on it

Lack of IT expertise demands simplicity

Demands are increasing, budgets are not

Today’s demands – availability 24/7/365

Data value is increasing and protecting it is critical

Industry standards and customer retention calls for it

Slow or no plan leaves data exposed / reduced flexibility

Simplicity and low-cost is key to support these sites

2


IBM System Storage™ DS3500 Express6 Gbps SAS-based storage system

Announcing…

� Next generation entry-level storage system featuring 6 Gbps SAS technology, improved performance, concurrent iSCSI/SAS or FC/SAS host connectivity, increased scalability and enhanced features

� Affordable entry-point with midrange performance, scalability and features

� Green efficiencies reduce energy expenditures

� Extensive suite of Microsoft and VMware solutions

� Ease-of-use built into a powerful and intuitive management software

� Multi-protocol connectivity support concurrent DAS / SAN

� Balanced performance ideally-suited for mixed workloads and virtualization

� Enhanced security features provides relentless data protection

Benefits

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� Three interface options – SAS, FC/SAS, iSCSI/SAS

– Four or eight 6 Gbps SAS host ports

– Eight 8 Gbps FC ports and four 6 Gbps SAS host ports

– Eight 1 Gbps iSCSI ports and four 6 Gbps SAS host ports

� Up to 96 SAS drives

– High performance SAS, nearline SAS, and self-encrypting SAS

– EXP3512 (2U 12 3.5-in drives) and EXP3524 (2U 24 2.5-in drive)

�Optional turbo performance feature

� IBM DS Storage Manager

– Robust and intuitive storage management

– Remote mirroring across FC host ports

DS3500 Overview

2.5-in

3.5-in

4


� Double the performance and capacity of the DS3000 series– Meets performance requirements with fewer drives– Achieved at an affordable price point– Easier than ever to keep up with increasing performance

and capacity demands

DS3500 Unique Value

Performance – disk reads

IOPs (Reads)

Throughput (Reads – MB/s)

DS3000 – 940

DS3500 Turbo – 4000

Capacity

DS3000 – 96 TB (48 2-TB SATA drives)

DS3500 – 192 TB (96 2-TB NL SAS drives)

DS3500 Turbo – 40,000

DS3000 – 20,000

6Gbps SAS storage system delivers mid-range performance and scalability attributes at entry-level prices

DS3500 Base – 30,000

DS3500 Base – 2,000

5


� Designed to meet multiple power efficiency standards

� Exceptional drive utilization meets performance requirements with fewer drives

– Reduces power consumption and heat dissipation

� Lower overall power consumption / heat dissipation with 2.5-in. drives

Power Consumption

DS3000 – 1,444 watts (48 drives, 4 enclosures)

DS3512 – 1,210 watts (48 drives, 4 enclosures)

DS3524 – 570 watts (48 drives, 2 encl)

Low power consumptionRuns cooler =

A single DS3524 can save over $1,600 annually in energy expenses

$

DS3500 Unique Value

Green Efficiencies: Get More, Pay Less


DS3500 Unique Value

� Full testing and integration with IBM System x, BladeCenter and Power Systems servers

– Worry-free compatibility - proven and reliable technology working together

– Smooth and quick implementation of servers and storage

• Integrated into IBM Systems Director multi-platform management solution

– Flexible financing through IBM Global Financing

– Single warranty and support provider!

Delivers highly integrated IBM server and storage solutions

7


Widest range of leading interface options increases flexibility and choice

FC

iSC

SI

SA

S Affordable shared DAS

Simple

Great performance

Proven and mature technology

Performance and reliability

Investment protection with auto-link speeds

Low-cost storage network

Pervasive and well understood

Extensive reach

Integrated rack solutions

Single room data centers

Small server / BladeCenter consolidations

Virtualization and MS applications

Benefits Key Environments

Smaller departmental SAN use

Department and remote sites

Tier 2 server consolidation

Moderate traffic demands


Current FC SAN implementations

Midrange/enterprise data centers

Backup and recovery implementations

Heavy traffic demands


DS3500 Unique Value

8


� Concurrent iSCSI/SAS or FC/SAS host connectivity– Use interface best suited for the server and/or I/O type

� One storage system to meet a variety of applications’ demands

Multi-protocol support provides consolidation flexibility to increase efficiencies and lower cost

Local production servers on 6Gb SAS

Secondarydispersed servers

on 1 Gbps iSCSI SAN

Blade Centeron 6Gb SAS

Primary dispersed servers

on 8 Gbps FC SAN

DS3500 Unique Value

9


• Intermix EXP3512 and EXP3524 enclosures

• 2.5” drives for IOPS-intensive applications

• 3.5” drives for cost-effective capacity

• Intermix drive types within enclosures• SAS, NL SAS and SED SAS

• Drive intermix reduces multiple storage systems down to one to meet a range of workload requirements

$

Extensive intermix capabilities meet application and energy requirements with the least investment

DS3500 Unique Value

10

7.2K NL SAS

SAS SED

Tier 1

Tier 2

Security

Tier 1 Tier 2IOPs-Intensive Energy Efficient

EXP3512 (3.5-in drives)

EXP3524 (2.5-in drives)

SAS SED

15K SAS

15K SAS / 7.2K NL SAS

DS3500 Controllers


High Availability – Always on Data

Data Availability = Productivity, Customer Satisfaction, Retained Revenue$

Software

Hardware

• Fully-redundant I/O paths with automated failover• Dual-active, hot-swappable controllers and components• Data cache is mirrored, battery backed, destaged to flash• Global hot spares• Hardware-assist RAID 6

• Reconstruct read data for slow drives• Enhanced first time data capture• Extensive diagnostic and statistics collection• Media scan with automated parity correction

DS3500 Unique Value

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� Enhanced and powerful capabilities built into the software with the new DS Storage Manager

� Common interface across the DS5000, DS4000,DS3500 and DS3000– Reduced learning curve – Centralized management of multiple storage systems from any location

� Increased replication, consolidation, security, and dynamic tasks

� Physical view of the storage system

� Remote mirroring supported across FC host ports and compatible with the DS5000

Intuitive and a powerful management that does not sacrifice control – ensuring investment protection with mirroring

DS3500 Unique Value

12


Product Overview -Hardware

13


DS3512

• 2U enclosure with dual-controllers and initial 12 drives (3.5-in SAS)

• Supports additional 84 drives via expansion

DS3524

• 2U enclosure with dual-controllers and initial 24 drives (2.5-in SAS)

• Supports additional 72 drives via expansion

DS3500 Storage Systems

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Specification Overview

� Dual-active, hot-swappable controllers (simplex models available)

� Four 6 Gb SAS ports (dual controller) with optional host card adding:– Four 6 Gbps SAS ports– Eight 8 Gbps FC ports– Eight 1 Gbps iSCSI ports*

� Two 6Gb SAS drive ports supporting up to 96 SAS drives– High performance SAS, NL SAS drives, and SED SAS drives – EXP3512 (2U 12 3.5-in drive) and

EXP3524 (2U 24 2.5-in drive) enclosures

– Dedicated data cache is mirrored, battery-back with persistent cache backup– 1GB cache standard; 2GB cache available as upgrade

� Optional Turbo Performance Feature– Turbo provides 30% IOPS improvement; 100% MB/s improvement

� Two Ethernet ports per controller module – One for remote management and one for authorized

service personnel trouble shooting and diagnostics 2.5-in

3.5-in

15*IPv6 support


SAS connectivity BladeCenter

� Supports BladeCenter with the SAS Connectivity Module

– Attaches up to 14* Blade servers within two IBM BladeCenters

� Support for both booting and data access

• Simplifies a blade environment by consolidating OS initialization across multiple servers

• Great for close-quarter SANs

SAS Connectivity Benefits

Shared direct-attached– Up to four hosts

� High performance

� Fast out-of-the box deployment

� Reduced complexity

� Consolidation for lower TCO

� Scalability with future SAS SAN support

16 * 28 Blade servers currently being tested. VMware support also being testing – support first out TBD


Optional Host Daughter Card

� Two 6 Gbps SAS ports per controller standard

� Optional host card provide increased connectivityand multi-protocol support

Part Number Feature Code Host Daughter Card

68Y8431 36106 Gbps SAS 2 host port daughter card

68Y8432 36118 Gbps FC 4 host port daughter card

68Y8433 36121 Gbps iSCSI 4 host port daughter card


DS3500 – Native SAS host ports only

Dual Controller Views

Four 6Gbps SAS ports for host connectivity

One 6 Gbps SAS port for drive expansion connectivity

Two 1-Gb Ethernet port for out-of-band management and authorized service personnel diagnostics

One PS/2 serial interface for service

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DS3500 – With optional SAS host daughter card

DS3500 – With optional FC host daughter card

DS3500 – With optional iSCSI host daughter card

Dual Controller Views (cont’d)


DS3500 Interface Decisions

(4) base SAS ports and (4) optional SAS ports • Can deliver maximum performance• Affordable shared DAS / Integrated rack solutions• BladeCenter consolidation for both booting and data access

(4) base SAS ports plus (8) optional FC ports• Desired increased concurrent mixed connectivity• Support for both locally shared DAS and FC SAN• Implementing Remote Mirroring

(4) base SAS ports plus (8) optional iSCSI ports• Desired increased concurrent mixed connectivity• Support for IP SAN • Low cost and simple support for secondary storage Idea

l for

virt

ualiz

atio

n an

d M

S a

pplic

atio

ns

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• 2U Enclosure

• Dual-active controllers/ESMs

• 24 2.5” Drives

• SAS drive connections

• Hot-swappable CRUs

• 2U Enclosure

• Dual-active controllers/ESMs

• 12 3.5” Drives

• SAS drive connections

• Hot-swappable CRUs

EXP3512

EXP3524

• All enclosures are SBB compliant

• Enclosures are cabled for enclosure loss protection

• Top down, bottom up

• EXP3512 and EXP3524 expansion enclosures can be intermixed behind an DS3500

Expansion Units and Cabling

21


Drive Intermix

� Support for– High performance SAS– Nearline SAS– SED SAS– 3.5-in and 2.5-in drives

• Enclosure intermix supported behind a single DS3500

� In order to maximize efficiencies…– What are the key attributes of each drive, and– Which drive should be suggested based on the application?

22


2.5-in. SAS Drives

2.5-in drives deliver slightly more IOPs across 48 drives than 3.5-in drives

3.5-in drives require much more power than 2.5-in drives

2.5-in. drives deliver four times the IOPs per watt as 3.5-in drives83.9

IOPs per watt (48 drives)

22.3

16,512

IOPs (48 drives)

14,112

197

Watts (48 drives)634

2.5-in 15K SAS – $27,792

Drive costs* (48 drives)

3.5-in 15K SAS – $38,352

$34,590(2 enclosures total)

Drive and enclosure costs (48 drives)$51,948 (4 enclosures total)

2.5-in drives provide a 27% cost saving over 3.5-in drives

2.5-in15K SAS

3.5-in 15K SAS

When expansion units are considered, the overall hardware costs of 3.5-in drives is considerably higher

* Based on lowest drive capacity available23


� Reduces overall storage system cost– No need for a SATA interposer

� Comparably priced to SATA drives – On average, NL SAS is only 3–4% more expensive

� Outperforms SATA– 25% improvement in sequential reads– 140% improvement in sequential writes– 15% improvement in random reads– 20% improvement in random writes

� SAS delivers up to a 38% IOPs per watt improvement over SATA (Seagate datasheet)

� Available in both 3.5-in and 2.5-in form factors

Nearline SAS Drives

24


SED SAS Drives and SED Management

� Data is secure at the most basic level – the hard drive– Covers most data exposures and vulnerabilities all at once

� Unparalleled security assurance with government-grade encryption– Advanced Encryption Standard (AES) 128 encryption algorithm

• This algorithm is approved by the US government for protecting secret-level classified data

� Data is protected through the hardware lifecycle – Enables return of defective drives for servicing – Quickly decommission or repurpose drives with instant secure erase

� Performance is preserved – Won’t slow a system down - encryption engine matches the

drive’s maximum port speed and scales as more drives are added

� In order for drive-level encryption to provide this value, the key which enables encryption must be protected and managed

SAN

DS3500

25


Supported Drives

Capacity 2.5-in. 3.5-in.

146 GB

300 GB

450 GB

500 GB

600 GB

1 TB

2 TB

15K 10K 7200

SE

D

SE

D

26


Application Access Patterns

Read intensive

Write intensive

I/O intensive

Throughputintensive

Random access

Sequential access

OLTP ● ● ● ●

Medical imaging ● ● ● ●

Document imaging ● ● ●

Backup/recovery ● ● ●

Data warehouse ● ● ●

System (SCP) ● ● ●

File serving ● ● ●

Web/Internet ● ● ●

Mixed workload ● ● ● ● ● ●

Virtualization

Multimedia/video ● ● ●

CAD/CAM ● ● ●

IOPs

MB/s

Best served by 15K 2.5-in or 3.5-in drives

Option for NL SAS drives

Con

side

r S

ED

driv

es

27


Controller Technology – Improving Performance

Increased host interface connections

PCI Express 2.0 x8 buses interface between ASIC and external interfaces providing 4GB of internal bandwidth

Next-generation 6 Gb SAS Power PC 440 ROC 800-MHz processor (aka Meteor)

– Super scalar core with a 1.9x MIPS multiplier that translates into 1.5-GHZ x-scale

– Performs both XOR and P+Q

36-port Bobcat expander

1

1

2

2

3

3

4

4

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DS3500 Drive Channels

� Fully redundant pathing from host to drive

� Each controller can access all drive ports

� Each drive chip can access every drive

� Again, top down, bottom up

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Flexibility with base and turbo performance (feature key) options

� Pay as your performance requirements grow.

MB/s

IOPs

Mixed

TurboBase

TurboBase

TurboBase

Turbo performance is key for bandwidth-oriented and mixed (consolidated) workloads and can make a

difference for larger-scaled transactional applications

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DS5000, DS4000 and DS3000 Positioning

31


IBM Entry-Level And Midrange Storage Positioning

SMB / Entry-level Workgroup Department Data Center HPC

• SAS, iSCSI connectivity

• DAS/shared DAS/IP SAN• Simple management

• Snapshot replication

• iSCSI, FC connectivity

• Shared DAS, small SAN• Simple management

• Snapshot replication

• FC, iSCSI connectivity

• Homogeneous SANs• Performance value

• Configuration flexibility

• Local/remote replication

• FC connectivity

• Heterogeneous SANs• Highest performance

• Configuration flexibility

• Local/remote replication

• FC connectivity

• System clusters• GPFS

• Maximum bandwidth

• Capacity density

DS3200, DS3300, DS3400• FC, SAS, iSCSI connectivity• (48) SAS, SATA drives• EXP3000 (12 drive) expansion unit

DS5020,DS3950*• FC, iSCSI connectivity• (112) FC, SED (DS5020 only), SATA drives• EXP5020 (16 drives) expansion unit

DS5100, DS5300• FC, iSCSI connectivity• (480) SSD, FC, SED, SATA drives• EXP5000 (16 drives) or new EXP5060 (60

drives) expansion units

DS3500• FC, SAS, iSCSI connectivity• (96) SAS, SED-SAS, NL-SAS drives• EXP3512 (12 3.5-in drive), EXP3524 (24

3.5-in drive) expansion units

* DS3950 not available in North America32


DS3000 | DS3500 | DS5020 Positioning

DS3000• Low-cost, entry-level storage with basic storage management• Ideally-suited for single-server DAS configurations

DS3500• Affordable entry-point with midrange features / scalability• Ideally-suited for mixed-workload, virtualization / consolidation environments• Enhanced storage management with full replication features

DS5020• FC-based midrange storage with exceptional IOPS performance• Ideally-suited for tiered-SAN (FC/iSCSI) environments• SSD supports drives higher performance / reduced latencies

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DS3000 / DS3500 Comparison

Dual-controller system (unless noted) D S 3 0 0 0 D S 3 5 0 0

Core technology 3 Gbps SAS 6 Gbps SAS

Host interfaces options• Two / Six 3 Gbps SAS; or • Four 4 Gbps FC; or• Four 1 Gbps iSCSI

• Four / Eight 6 Gbps SAS; or• Eight 4 Gbps FC and four 3 Gbps SAS; or• Eight 1 Gbps iSCSI and four 3 Gbps SAS

Redundant drive channels Two 3 Gb SAS Two 6 Gb SAS

Max drives and type 48 SAS / SATA 96 SAS / SED-SAS / NL-SAS

Drive enclosures 3.5-in drives in 12-drive enclosure3.5-in drive in 12-drive enclosure2.5-in drives in 24-drive enclosure

Data cache 1 GB per controllers 1 or 2 GB per controller

Cache IOPS 103,000 IOPS 200,000 IOPS (turbo)

Disk Read IOPS 21,000 IOPS 40,000 IOPS (turbo)

Disk Read MB/s 940 MB/s 4,000 MB/s (turbo)

Premium features• Partitioning (32)• FlashCopy (8)• VolumeCopy

• Partitioning (64)• FlashCopy (8)• VolumeCopy• Remote Volume Mirroring (FC-only)

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© 2010 IBM Corporation35

Specification Comparison

Dual-controller system DS5020 DS3950 DS3500

Host interface

• Four 8 Gbps FC• Four additional optional

interfaces – 8 Gbps FC or 1 Gbps iSCSI

• Four 8 Gbps FC ,or • Four 8 Gbps FC and four

1 Gbps iSCSI

• Four or eight 6 Gbps SAS• Eight 8 Gbps FC and four 6

Gbps SAS• Eight 1 Gbps iSCSI and

four 6 Gbps SAS

Redundant drive channels Four 4 Gbps FC Four 4 Gbps FC Two 6 Gbps SAS

Drive enclosure 16-drive (3.5-in) 3U 16-drive (3.5-in) 3U 12-drive (3.5-in) 2U24-drive (2.5-in) 2U

Max drives 112 112 96

Drives supported FC,SATA, SED FC, SATA SAS, NL SAS, SED*

XOR engine Integrated XOR / P+Q Integrated XOR / P+Q Integrated XOR / P+Q

Dual Ethernet Yes Yes Yes

Data cache / memory 2 or 4 GB 2 or 4 GB 2 or 4 GB

* Two drive options – 600GB SAS SED (3.5-in) or 300GB SAS SED (2.5-in)

© 2010 IBM Corporation36

Management Software Comparison

Dual-controller system DS5020 DS3950 DS3500

Management software version DS Storage Manager DS Storage Manager DS Storage Manager

Max logical drives 1,024 1,024 256

Max LUN size > 2TB > 2TB > 2TB

RAID levels 1, 3, 5, 6, 10 1, 3, 5, 6, 10 1, 3, 5, 6, 10

Max RAID 10 / 0 size 112 drives 112 drives 96 drives

Max RAID 3 / 5 / 6 size 30 drives 30 drives 30 drives

Max partitions 128 128 64

Max snapshots per base volume 8 8 8

Maximum remote mirrors (across FC)

64 64 8


Product Overview - Software

37


DS Storage Manager Software

� Feature-rich management software enables high performance, maximum utilization and uninterrupted data availability

38


DS Storage Manager Enhancements

FlashCopy

Volume Copy

Partitions

Remote Mirroring

SED management

Dynamic Capabilities

The new DS Storage Manager brings increased replication granularity, consolidation, security, and dynamic capabilities

8 /volume 64/system

8 simultaneous

Up to 32

Not supported

Not supported

CLI and some GUI

8 /volume 64/system

8 simultaneous

Up to 64

Supported across FC hosts

SED management

GUI or CLI

39


� Provides a logical single view of the storage system– Birds-eye-view of the storage configuration

• Controller assignment• Volume-to-drive assignment• Identify drive types• Controller and drive enclosure

component overview


40


� Viewable physical representation of the storage system

– Physical tab


41


� Intuitive and powerful– Robust functionality with easy-to-understand GUI and wizards– Unparalleled configuration flexibility enables superior utilization– Tune any attribute to meet any server / application need

� Data is always available / protected– Online configuration, reconfiguration, expansion, maintenance– Automated I/O path failover, drive rebuild, cache destage– Integrated disk encryption, RAID 6

� Fully-integrated advanced functionality (premium features)– Partitioning, FlashCopy, Volume Copy, Remote Mirroring (across FC host

ports)

DS Storage Manager Software

42


Anytime Administration – Anytime Data

� EXP HotAdd Technology– Online capacity expansion, configuration and LUN access

� Dynamic Capacity Expansion (DCE)– Add drives to existing volume groups (restripes volumes)

� Dynamic Volume Expansion (DVE)– Add available capacity to existing volumes (OS dependent)

� Dynamic RAID Level Migration (DRM)– Change the RAID configuration of a volume group (without relocating data )

� Dynamic Segment Size Migration (DSS)– Change the data stripe size (without relocating data )

� Dynamic mode switching– Change between remote mirroring modes

43


Configuration Flexibility

� Tune any attribute to meet any application need

� Single storage system supports:– Multiple RAID levels

0, 1, 1+0, 3, 5, 6– Multiple drive types, capacities, form factors

and rotational speeds– Multiple and various RAID sizes

• RAID 1 and 10 – 1+1 up to 48+48• RAID 3, 5 and 6 – 2+1 up to 29+1

– One or more volumes per RAID group– Settings defined on a logical drive basis

• Concurrently maximize performance, capacity and availability– Dynamic configuration / re-configuration

44


DACstore Technology

� Configuration data is stored on every configured drive. – Each drive knows its state and status as

well as its logical drives’ state and status– One drive in each volume group stores the

controller- and subsystem-level information• Minimum of three per disk system

� DACstore benefits:– Creates “data intact” drive portability as drives

are not bound to a given enclosure or slot• Individual physical drives can be relocated within a system

to improve channel utilization (performance / availability)• Individual volume groups can be migrated to another system• Full systems can be upgraded by simply replacing the controllers

� Higher availability– Critical configuration data stored on every drive, not just a few

USABLE STORAGE

45


RAID 6

� Uses two independent forms of check data (n+2) to protect against two distinct failure scenarios:

– The failure of any two member drives– Media error during reconstruction

� Hardware-assisted P+Q implementationenables superior performance

– Single-stripe write that employs two parity values (“p” and “q”) within each data stripe

– Efficient implementation delivers greater performance (compared to DP)

� Additional features– Enabled on a per-volume group basis– Dynamic RAID level migration available

46


Management of SED Drives

� In combination with SED, IBM DS Storage Manager supports a full data encryption solution

– Maintains /controls the key linkage and communications with the SED drive– Provides all the management tools necessary to quickly and simply enable and

SED drives

� Secure

� Cost-effective

� No impact on performance or ease-of-useSAN

Application Servers

Authentication Key Flow Data Flow

SED Key Management

47


� Creates multiple virtual systems from a single disk system

– Max 64 partitions

� Heterogeneous host support enables consolidation in multi-platform environments

� Storage-based implementation ensures data integrity

� Logical partitioning provides flexibility

Storage Partitioning

Host A

Host B

SVC

Group C

LD2

LD2

StoragePartition

A

StoragePartition

B

StoragePartition

C

Unmapped Volumes

48


FlashCopy

� A point-in-time (PiT) image of a logical drive – Logical equivalent of a physical copy

� Features:– Provides an instantaneous copy– Requires less disk space than a full copy– Mappable to any host – Can be read from, or written to

� Primary uses:– PiT backup image– File / volume restoration source– Data mining / analysis

Base

FlashCopy Repository

FlashCopy Image

X B C A B C

Z

A C

Physical Logical

49


Volume Copy

� Complete point-in-time replication of one logical drive (FlashCopy image) to another within a disk system

– Target also referred to as a clone

� Primary uses:– Full PiT data set available for analysis, mining, or testing

• Doesn’t degrade performance of production logical drive

– Redistribute data for performance and/or capacity optimization

• Technology migration to new / faster / larger drives

• Move logical drives to more desirable volume groups with differentRAID levels

Production Server Analysis Server

PiTCloneFlashCopy

SourceVolumeCopy

50


Investment protection -Leverage existing hardware resources

Remote Mirror across FC Host Ports

� Low cost, effective disaster recovery or centralize backup data

� Storage-based data replication with multiple mirroring modes

� Primary uses:– Disaster recovery, Centralized backup, centralized data mining

– Designed to provide ongoing, real-time replication from a DS3500 to another DS3500 or DS5000

– Up to 8 mirror pairsRemote Office

Corporate Data Center

Remote Office

Remote OfficeREPLICATE

REPLICATE

REPLICATE

RESTORE

RESTORERESTORE

$

51


Recap

52


The DS3500 Express….the Right Storage System at the Right Time

53


Thank you!

54


Disclaimers

� Copyright © 2010 by International Business Machines Corporation.

� This publication is provided “AS IS.” IBM product in formation is subject to change without notice.

� No part of this document may be reproduced or trans mitted in any form without written permission from I BM Corporation. Product data has been reviewed for accuracy as of t he date of initial publication. Product data is su bject to change without notice.

� This document could include technical inaccuracies or typographical errors. IBM may make changes, impr ovements or alterations to the products, programs and services described in this document, including termination o f such products, programs and services, at any time and without noti ce. Any statements regarding IBM’s future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives only. The informati on contained in this document is current as of the initial date of publi cation only and is subject to change without notice . IBM shall have no responsibility to update such information.

� Information concerning non-IBM products was obtaine d from the suppliers of those products, their publi shed announcements or other publicly available sources. IBM has not tested those products in connection wi th this publication and cannot confirm the accuracy of performance, com patibility or any other claims related to non-IBM pr oducts.

� IBM makes no representations or warranties, express ed or implied, regarding non-IBM products and servi ces, including those designated as ServerProven.

� IBM is not responsible for the performance or inter operability of any non-IBM products discussed herei n. Performance data for IBM and non-IBM products and services contained in this document was derived under specific operati ng and environmental conditions. The actual results obtain ed by any party implementing such products or servi ces will depend on a large number of factors specific to such party’s op erating environment and may vary significantly. IBM makes norepresentation that these results can be expected o r obtained in any implementation of any such product s or services.

55


Disclaimers (continued)

� MB, GB and TB equal 1,000,000, 1,000,000,000 and 1, 000,000,000,000 bytes, respectively, where referrin g to storage capacity. Actual storage capacity will vary based u pon many factors and may be less than stated. Some numbers given for storage capacities give capacity in nativ e mode followed by capacity using data compression technology.

� THE INFORMATION IN THIS DOCUMENT IS PROVIDED “AS-IS ” WITHOUT ANY WARRANTY, EITHER EXPRESSED OR IMPLIED. IBM EXPRESSLY DISCLAIMS ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT. IBM products are warran ted according to the terms and conditions of the agreements (e.g., IBM Customer Agreement, Statement of Limited Warranty, International Program License Agreement, etc.) under which they are provided.

� References in this document to IBM products, progra ms or services does not imply that IBM intends to m ake such products, programs or services available in all cou ntries in which IBM operates or does business. Cons ult your local IBM business contact for information on the product or services available in your area. Any reference to an IBM program or product in this document is not intended to state or imply that only that program may be us ed. Any functionally equivalent program or product that doe s not infringe IBM’s intellectual property rights m ay be used instead. It is the user’s responsibility to evaluat e and verify the operation of any non-IBM product, program or service.

� IBM's customer is responsible for ensuring its own compliance with legal requirements. It is the custo mer's sole responsibility to obtain advice of competent legal counsel as to the identification and interpretation of any relevant laws and regulatory requirements that may affect th e customer's business and any actions the customer may need to take to comply with such laws. IBM does not provide legal advice or represent or warrant that its servi ces or products will ensure that the customer is in compliance with any law.

� The provision of the information contained herein i s not intended to, and does not, grant any right or license under any IBM patents or copyrights. Inquiries regarding patent or copyright licenses should be made, in wr iting, to:

IBM Director of LicensingIBM CorporationNorth Castle DriveArmonk, NY 10504-1785U.S.A.

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