IBM System Storage DS 3950 Express Disk System

IBM System Storage™ DS 3950 Express Specification Overview • Two models: • 94 H: four 8 Gbps FC interfaces • 98 H: four 8 Gbps FC and four 1 Gbps i. SCSI • 2 GB (94 H) or 4 GB (98 H) of cache • Mirrored, battery-backed, destaged to flash • FC/SATA drives • FC: 146. 8 GB, 300 GB, 450 GB (15 K) • SATA: 750 GB, 1, 000 GB (7. 2 K) • Four 4 Gbps FC drive interfaces support up to six EXP 395 expansion units • Max of 112 drives © 2009 IBM Corporation

IBM System Storage™ DS 3950 Express Specification Overview • Client version: 10. 60 • Firmware: 7. 60 • Premium features supported: • • Partitioning – 2 (Std. ), 4, 8, 16, 32, 64, 128 Flash. Copy – 4, 8 (per base) Volume. Copy Enhanced Remote Mirroring – 32, 64 © 2009 IBM Corporation

IBM System Storage™ DS 3950 Express Disk System – Components • DS 3950 Express controller enclosure • • Dual-active controllers Host/SAN connections Expansion drive loops Ethernet connections Battery Hot-swappable CRUs 16 FC/SATA drives • EXP 395 drive expansion unit • • 4 Gbps ESMs 16 FC/SATA drives Switched architecture Hot-swappable CRUs © 2009 IBM Corporation

IBM System Storage™ DS 3950 Express Disk System Front View Power / Cooling Controllers

IBM System Storage™ DS 3950 Express – Rear View 1 Controllers 2 Power /

IBM System Storage™ DS 3950 Express Controller Comparisons Two FC host ports, and Two

IBM System Storage™ DS 3950 Express Controller Host interfaces Drive ports Dual Ethernet connections

IBM System Storage™ Host-side Connectivity • Four 8 Gb/s FC ports for host or SAN connections • Auto-negotiates 2, 4, 8 link speeds • Model 98 H adds four 1 Gbps i. SCSI ports DS 3950 Model 94 H • I/O paths to each controller should be established for full redundancy and failover protection DS 3950 Model 98 H © 2009 IBM Corporation

IBM System Storage™ DS 3950 Express Drive Ports • Four 4 Gbps drive loops

IBM System Storage™ Back-end Designed For Availability / Low Latency • When attaching enclosures, drive loops are configured as redundant pairs utilizing one port from each controller. This helps ensure data access in the event of a path/loop or controller failure • Top-down, bottom-up cabling ensures drives stay online • Short, quick drive loops reduce latency and create more responsive applications Model 98 H shown © 2009 IBM Corporation

IBM System Storage™ EXP 395 Expansion Unit • 16 drives in 3 U enclosure • 4 Gbps FC interfaces / ESMs • High-speed, low-latency interconnect from controllers to drives • Supports intermixing FC and SATA drives • More efficient use of enclosures • Unique speed-matching technology • 3 Gbps SATA II drives effectively run at 4 Gbps speeds • Switched architecture • Drive isolation, better diagnostics • Higher performance, lower latency © 2009 IBM Corporation

IBM System Storage™ Enclosure-based Storage Tiers • Drive carrier designed to eliminate rotational vibration issues • Supports intermixing FC and SATA drives in single enclosure • Maintains 4 Gbps FC drive loop • Allows optimal configurations • Maximize backend channels • Fully utilize purchased enclosures • Increase system availability FC FC FC SATA FC SATA No restrictions or limitations of FC/SATA drive locations within EXP 395 © 2009 IBM Corporation

IBM System Storage™ DS 3950 Controller 14 © 2009 IBM Corporation

IBM System Storage™ DS 3950 Controller Technology Processors And Busses • Core processor with built-in hardware-assist for RAID • Performs both XOR (5) and P+Q (6) • 1. 2 Ghz • 2 GBps PCI-Express X 8 busses between processor and external interfaces • 2 GBps of internal bandwidth per controller 15 © 2009 IBM Corporation

IBM System Storage™ DS 3950 Controller Technology Host And Drive Interfaces • Two 8 Gbps FC host ports • Models 94 H and 98 H • Two optional 1 Gbps i. SCSI host ports • Model 98 H • Quad-ported 8 Gbps FC chip • Two ports for host-side • Two ports for drive-side • PCIe x 8 connection to processor • 4 Gbps FC “loop switch” chips connect controllers to drives • Each switch chip has a dedicated connection to the alternate controller • Two external drive ports for expansion 16 © 2009 IBM Corporation

IBM System Storage™ DS 3950 Controller Technology Cache and Management • 2 or 4 GB of data cache / memory • Dynamic read/write allocations • Dedicated 4 GBps buss to processor • De-staged to flash after power loss • Battery power used to copy data from cache to the internal flash drives • Eliminates loss of cache due to long-term loss of power • Small amount (~250 MB) partitioned for processor memory • Dual 1 Gbit Ethernet management port • Each connection has its • own RJ-45 connection • Connections support IPv 6 as well as IPv 4 addresses 17 © 2009 IBM Corporation

IBM System Storage™ DS 3950 Drive Channels • Fully redundant pathing from host to

IBM System Storage™ DS 3950 Express / DS 4700 Comparison Dual-controller system (unless noted) DS 4700 DS 3950 Host interfaces options Four 4 Gbps FC; or Eight 4 Gbps FC Four 8 Gbps FC (94 H); or Four 8 Gbps FC & four 1 Gbps i. SCSI (98 H) Redundant drive channels Four 4 Gbps Max drives 112 FC/SATA 112 FC/FDE/SATA RAID Processor Intel x. Scale 667 MHz Bus Technology PCI-X (1 Gbps) Internal controller bandwidth 2 GBps Cache memory (min/max) 2 GB / 4 GB Cache IOPS 120, 000 IOPS 67% 200, 000 IOPS Disk Read IOPS 40, 000 IOPS 25% 50, 000 IOPS Disk Read MB/s 980 MB/s 60% 1, 600 MB/s 80% Intel x. Scale 1. 2 GHx PCI-Express x 8 (4 Gbps) 100% 4 GBps 2 GB (94 H) / 4 GB (98 H) © 2009 IBM Corporation

IBM System Storage™ DS 3950 Express / DS 5020 Express – Comparison 3950 Model 98 H 3950 Model 94 H 5020 Host interfaces options Four 8 Gbps FC & four 1 Gbps i. SCSI Four 8 Gb/s FC Four 8 Gbps FC; or Eight 8 Gbps FC; or Four FC and four 1 Gbps i. SCSI Drive channels Four 4 Gb/s Max drives 112 FC/SATA 112 FC/FDE/SATA RAID Engine Integrated XOR / P+Q Cache memory 4 GB 2 or 4 GB Premium Features • • Partitions (2 std. Up to 128) Flash. Copy (8) Volume. Copy Remote Mirroring (64) • • • Partitions (Up to 128) Flash. Copy (8) Volume. Copy Remote Mirroring (64) Encryption © 2009 IBM Corporation

IBM System Storage™ DS 5000 Performance DS 5100 DS 5300 base performance enhanced performance 200, 000 IOPS 650, 000 IOPS 700, 000 IOPS 39, 250 IOPS 50, 000 IOPS 76, 000 IOPS 170, 000 IOPS Sustained I/O rate disk writes 9, 350 IOPS 9, 500 IOPS 20, 000 IOPS 38, 000 IOPS Drives 112 256 448 Burst throughput cache read 1, 550 MB/s 3, 700 MB/s 1, 600 MB/s 6, 400 MB/s Sustained throughput disk read 980 MB/s 1, 600 MB/s 6, 400 MB/s Sustained throughput disk write 850 MB/s 1, 400 MB/s 1, 300 MB/s 5, 300 MB/s Host ports 4 4 8 16 DS 4700 DS 3950 Burst I/O rate cache reads 120, 000 IOPS Sustained I/O rate disk reads © 2009 IBM Corporation

IBM System Storage™ SPC-1 IOPS Performance 60 K DS 5300 62, 243 SPC-1 IOPS @ 256 drives (~ 14 ms) DS 4800 45, 015 SPC-1 IOPS @ 224 drives (~ 15 ms) 40 K DS 3950 Express 26, 090 SPC-1 IOPS @ 80 drives (~ 10 ms) 20 K IOPS DS 4700 17, 195 SPC-1 IOPS @ 64 drives (~ 26 ms) Drives 80 256 DS 3950 vs. DS 4700 Response time at 100% workload. Max allowed is 30 ms. 50% performance gain 20% more IOPS per drive 60% response time decrease * Based on DS 5020 results © 2009 IBM Corporation

IBM System Storage™ SPC-2 MB/s Performance 5 K DS 5300 5, 631 SPC-2 MB/s @ 128 drives DS 4800 1, 381 SPC-2 MB/s @ 60 drives DS 3950 Express 1, 247 SPC-2 MB/s @ 30 drives 2 K MB/s DS 4700 823 SPC-2 MB/s @ 30 drives Drives 30 60 128 DS 3950 vs. DS 4700 50% throughput increase * Based on DS 5020 results © 2009 IBM Corporation

IBM System Storage™ DS Storage Manager Software • Feature-rich management software enables high performance,

IBM System Storage™ DS Storage Manager Software • 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, proactive drive monitoring • Fully-integrated advanced functionality (premium features) • Partitioning, Flash. Copy, Volume Copy, Enhanced Remote Mirroring © 2009 IBM Corporation

IBM System Storage™ Intuitive GUI For Simplified Daily Administration • Ease of use features • • • Right-click menus and fly-over help Online help | documentation One-step configuration capture Script engine for batch operations Automatic and manual device discovery User-named disk systems and logical drives • Task-oriented starting point for carrying out common storage management operations © 2009 IBM Corporation

IBM System Storage™ Anytime Administration – Anytime Data Helps ensure data is always available • EXP Hot. Add Technology • Online capacity expansion, configuration and LUN access • Dynamic Array Expansion (DAE) • Add drives to existing array (restripes logical drives, defrags array) • Dynamic Volume Expansion (DVE) • Add available capacity to existing logical drives (OS dependent) • Dynamic RAID Level Migration (DRM) • Change the RAID configuration of an array (without relocating data ) • Dynamic Segment Size Migration (DSS) • Change the data stripe size (without relocating data ) • Dynamic mode switching • Change between remote mirroring modes © 2009 IBM Corporation

IBM System Storage™ 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 and rotational speeds • Multiple and various RAID array sizes • RAID 1 and 10 – 1+1 up to 56+56 • RAID 3, 5 and 6 – 2+1 up to 29+1 • One or more logical drives per RAID array • Settings defined on a logical drive basis • Concurrently maximize performance, capacity and availability • Dynamic configuration / re-configuration © 2009 IBM Corporation

IBM System Storage™ 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 RAID array stores the controller- and subsystem-level information • Minimum of three per disk system • DACstore benefits: USABLE STORAGE • 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 RAID arrays 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 © 2009 IBM Corporation

IBM System Storage™ 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 implementation enables 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-array basis • Dynamic RAID level migration available • Combined with PDHM offers unparalleled drive and data protection © 2009 IBM Corporation

IBM System Storage™ Storage Partitioning Host A Host B SVC Group C • Creates multiple virtual systems from a single disk system • Max 128 partitions • Heterogeneous host support enables consolidation in multi-platform environments • Storage-based implementation ensures data integrity Storage Partition A Storage Partition B Storage Partition C LD 2 Unmapped Volumes • Logical partitioning provides flexibility © 2009 IBM Corporation

IBM System Storage™ Storage Partitioning Benefits • More efficient storage utilization • No need for extra capacity on each server -- available capacity can be easily allocated to servers as needed • More efficient storage management • Administrators spend less time and money managing storage -fewer storage systems needed to support many servers • Improved storage flexibility • Servers and storage are de-coupled -- easily add storage, new servers or retire older servers without storage unload/reload or downtime • Reduced storage TCO • Amortize the cost of high performing, highly available storage over multiple servers or clusters -- including servers where not previously economically feasible © 2009 IBM Corporation

IBM System Storage™ Flash. Copy • A point-in-time (Pi. T) 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 Z XBC ABC Base Flash. Copy Image • Primary uses: • Pi. T backup image • File / volume restoration source • Data mining / analysis AC Flash. Copy Repository Physical Logical © 2009 IBM Corporation

IBM System Storage™ Volume. Copy • Complete point-in-time replication of one logical drive (Flash. Copy image) to another within a disk system • Target also referred to as a clone • Primary uses: • Full Pi. T data set available for analysis, mining, or testing • Doesn’t degrade performance of production logical drive Production Server Analysis Server • Redistribute data for performance and/or capacity optimization • Technology migration to new / faster / larger drives • Move logical drives to more desirable RAID arrays Flash. Copy Source Pi. T Clone Volume. Copy © 2009 IBM Corporation

IBM System Storage™ Enhanced Remote Mirroring • Storage-based data replication • Designed to provide ongoing, real-time replication of a logical drive from one storage subsystem to another • Three mirroring modes • Metro Mirror • Global Copy • Global Mirror • Primary uses: • Disaster recovery • Centralize backup data • Centralize data mining / analysis • Up to 64 mirror pairs Mirror A Volume A Cross mirroring Mirror B Volume B © 2009 IBM Corporation

IBM System Storage™ Enhanced Remote Mirroring – Key Features Designed to provide: • Synchronous, asynchronous and WOC mirroring modes • Helps enables administrators to choose the replication method that best meets protection, distance or performance requirements • Dynamic mode switching without suspending the mirror • Helps enables administrators to accommodate changing application and bandwidth requirements without sacrificing protection • Suspend / resume mirroring with delta resynchronization • Helps reduce vulnerability associated with reestablishing the mirror • Read-only mirror access (includes Flash. Copy creation) • Helps enable the remote data to be utilized prior to a disaster without sacrificing protection of the primary site data © 2009 IBM Corporation

IBM System Storage™ S N QUESTIO ? © 2009 IBM Corporation

IBM System Storage™ Legal Information and Trademarks The following terms are trademarks of International Business Machines Corporation in the United States, other countries, or both: IBM, IBM Logo, on demand business logo, Total. Storage, Enterprise Storage Server, x. Series, Blade. Center, e. Server, Serve. RAID and Flash. Copy. The following are trademarks or registered trademarks of other companies. Intel is a trademark of the Intel Corporation in the United States and other countries. Java and all Java-related trademarks and logos are trademarks or registered trademarks of Sun Microsystems, Inc. , in the United States and other countries. Lotus, Notes, and Domino are trademarks or registered trademarks of Lotus Development Corporation. Linux is a registered trademark of Linus Torvalds. Microsoft, Windows and Windows NT are registered trademarks of Microsoft Corporation. SET and Secure Electronic Transaction are trademarks owned by SET Secure Electronic Transaction LLC. UNIX is a registered trademark of The Open Group in the United States and other countries. * All other products may be trademarks or registered trademarks of their respective companies. Notes: Performance is in Internal Throughput Rate (ITR) ratio based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput that any user will experience will vary depending upon considerations such as the amount of multiprogramming in the user's job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve throughput improvements equivalent to the performance ratios stated here. IBM hardware products are manufactured from new parts, or new and serviceable used parts. Regardless, our warranty terms apply. All customer examples cited or described in this presentation are presented as illustrations of the manner in which some customers have used IBM products and the results they may have achieved. Actual environmental costs and performance characteristics will vary depending on individual customer configurations and conditions. This publication was produced in the United States. IBM may not offer the products, services or features discussed in this document in other countries, and the information may be subject to change without notice. Consult your local IBM business contact for information on the product or services available in your area. All statements regarding IBM's future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives only. Information about non-IBM products is obtained from the manufacturers of those products or their published announcements. IBM has not tested those products and cannot confirm the performance, compatibility, or any other claims related to non-IBM products. Questions on the capabilities of non-IBM products should be addressed to the suppliers of those products. Prices subject to change without notice. Contact your IBM representative or Business Partner for the most current pricing in your geography. This presentation and the claims outlined in it were reviewed for compliance with US law. Adaptations of these claims for use in other geographies must be reviewed by the local country counsel for compliance with local laws. © 2009 IBM Corporation

IBM System Storage™ NOTICES AND DISCLAIMERS Copyright © 2009 by International Business Machines Corporation. All rights reserved. No part of this document may be reproduced or transmitted in any form without written permission from IBM Corporation. Product data has been reviewed for accuracy as of the date of initial publication. Product data is subject to change without notice. This document could include technical inaccuracies or typographical errors. IBM may make improvements and/or changes in the product(s) and/or program(s) described herein at any time without notice. Any statements regarding IBM's future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives only. References in this document to IBM products, programs, or services does not imply that IBM intends to make such products, programs or services available in all countries in which IBM operates or does business. Any reference to an IBM Program Product in this document is not intended to state or imply that only that program product may be used. Any functionally equivalent program, that does not infringe IBM's intellectually property rights, may be used instead. THE INFORMATION PROVIDED IN THIS DOCUMENT IS DISTRIBUTED "AS IS" WITHOUT ANY WARRANTY, EITHER EXPRESS OR IMPLIED. IBM EXPRESSLY DISCLAIMS ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT. IBM shall have no responsibility to update this information. IBM products are warranted, if at all, 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. Information concerning non-IBM products was obtained from the suppliers of those products, their published announcements or other publicly available sources. IBM has not tested those products in connection with this publication and cannot confirm the accuracy of performance, compatibility or any other claims related to non-IBM products. IBM makes no representations or warranties, expressed or implied, regarding non-IBM products and services. The provision of the information contained herein is 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 writing, to: IBM Director of Licensing IBM Corporation North Castle Drive Armonk, NY 1 0504 - 785 U. S. A. © 2009 IBM Corporation