IBM Flex System surpasses blade offerings in every respect August 2013 ®
Why IBM Flex System is the Best Blade Solution on the Market
Mark T. Chapman IBM Systems and Technology Group Why IBM Flex System is the Best Blade Solution on the Market Page 2
Executive Overview The announcement of IBM ® PureSystems ™ inaugurated a new era of computing. More than just a new server or family of servers, PureSystems introduced a new way of thinking about computing, offering previously unheard-of levels of out-of-the-box integration and built-in expertise. The PureSystems family offers clients the flexibility to custom-build and tune their configurations, the simplicity of pre-configured, factory-integrated infrastructure and management, and the control of pre-integrated platform systems.
IBM PureFlex System ™, part of the IBM PureSystems family of expert integrated systems, combines advanced IBM hardware and software with patterns of expertise and integrates them into optimized configurations that are simple to acquire and deploy, so you can achieve faster time to value. IBM Flex System ™, the elements that make up IBM PureFlex System, allows you to build your own system to meet your unique IT and middleware platform requirements with a set of no-compromise components, including compute, storage, networking and systems management. • IBM PureFlex System ™ — If you need a pre-configured, pre-integrated infrastructure with integrated management and cloud capabilities, factory tuned from IBM with x86 and IBM POWER ® compute nodes, IBM PureFlex System is the answer. • IBM Flex System ™ — If you want to custom-build and tune a configuration to meet your specific requirements, using the most advanced blade server in the market with maximum x86 compute and memory performance, IBM Flex System is the right fit.
Whether you choose IBM PureFlex System or IBM Flex System, you get extraordinary choice and flexibility for compute power, storage capability, and networking solutions in a next-generation chassis designed for the next decade of processor technologies and a no-compromise design. Advantages include: • Twice the application density in the same floor space 1 • Energy costs reductions of up to 40% 2 • Flexibility to run UNIX ®, IBM i, Linux ®, and Microsoft ® Windows ® applications • Support for multiple virtualization solutions, including IBM PowerVM ®, VMware, KVM and Microsoft Hyper-V® • Choice of networking technologies, including Ethernet, InfiniBand, Fibre Channel, and Fibre Channel over Ethernet (FCoE) • Network interoperability certification with Cisco, Juniper, and Brocade • Storage management and virtualization of IBM and non-IBM storage, including EMC and NetApp • Optimized and virtualized appliance solutions from leading application providers • No application migration needed for tens of thousands of Windows, IBM AIX ®, IBM PowerLinux ® and IBM i applications running on POWER7 ®.
For many customers, the integration and built-in expertise of PureFlex System offerings can save time and money and produce superior results. But other customers prefer to “roll their own” configurations. In those cases, IBM Flex System is the preferred offering.
IBM Flex System is quite simply the best blade offering on the market. The rest of this document explains briefly how and why IBM Flex System outperforms other blade systems.
1 Based on IBM testing and documented in IBM System x® Virtualization Server Consolidation sizing methodology. The IBM Flex System x240 Compute Node supports 2.7X more Peak Utilization Virtual Machines (VMs) than previous generation BladeCenter blades. 2 Flex System x240 Compute Node requires 40% less energy than earlier-generation Intel x86 processor technology. Why IBM Flex System is the Best Blade Solution on the Market Page 3
IBM Flex System vs. Blade Systems IBM was one of the pioneers in blade computing, and with more than a decade of experience in that arena IBM has learned a lot about what works well and what needs improving. With IBM Flex System design, IBM has improved every aspect of blade computing, from servers to chassis, to networking, to storage and I/O, to management.
Briefly, here is the combination of capabilities that Flex System solutions offer and blade systems from HP, Dell, Cisco and, yes, even IBM BladeCenter®, can’t:
Compute Nodes (Blades) Flex System compute nodes (p24L, p260, p270, p460, x220, x222, x240, and x440) offer uncompromised processor support, and maximum memory: • A choice of 2- and 4-socket servers, using the latest IBM POWER ® or Intel Xeon processors. • The ability to mix-and-match POWER and x86 processor-based compute nodes in the same chassis to fit the right server to the right workload. • The ability to mix-and-match standard- and half-width nodes in the same chassis. • Virtualization support for VMware, Microsoft Hyper-V, KVM, and IBM PowerVM in the same chassis. • Redundant hypervisors via dual internal flash drives. • OS support for Microsoft Windows Server ®, AIX, PowerLinux, and IBM i, as well as Linux from Red Hat and SUSE, in the same chassis. • The design of the IBM Flex System Enterprise Chassis, which provides tremendous power and cooling savings by sharing a smaller number of energy-efficient fans, power supplies, and other components, rather than many, less efficient, components. (And having more components means more parts to fail.) • x86 processor-based compute nodes offer: The full range of Intel Xeon E5-2400 (x220/x222), E5-2600 (x240), and E5-4600 (x440) series of CPUs, including the high-performance, high-wattage processors that other vendors cannot support. Support for up to 768GB (2-processor x240) or 1.5TB (4-processor x440) of DDR3 memory, using 32GB LRDIMMs. That’s more than most blade or rack servers. More memory means more VMs per system; more VMs mean greater system utilization and faster ROI. 14 x220/x240 2-socket compute nodes or 28 x222 twin 2-socket high-density compute nodes, or 7 x440 4-socket compute nodes per 10U chassis. (The x222 compute node includes two independent x222 servers , each with its own processors, memory, and I/O.) The industry’s most flexible storage offerings: • Support for two 2.5-inch hot-swap SAS/SATA HDDs or solid-state drives (SSDs) (x220/x240/x440), or one simple-swap 2.5-inch SATA HDD or two hot-swap 1.8-inch SSDs per x222 computer (two x222 computers per x222 node). • A unique implementation of high-speed RAID and flash capability with IBM Flex System Flash, which supports eight 1.8-inch SSDs in the compute nodes (with up to 1.6TB of SSD storage capacity); 4 hot-swap and 4 internal. • Flex System Storage Expansion Node (see description below). • IBM Flex System V7000 Storage Node (see description below). Why IBM Flex System is the Best Blade Solution on the Market Page 4
Two next-generation high-speed PCIe Gen 3 adapter slots for faster I/O than in older systems. The ability to add GPU (Graphics Processing Unit) solutions and high-IOPS SSD storage via PCIe expansion nodes to x220 and x240 compute nodes. These options enable faster performance and application acceleration to specific workloads. Support for up to eight 10Gb Ethernet Virtual Fabric ports per server and support for up to 32 vNICs per server (x220/x240/x440); or four 10Gb Ethernet Virtual Fabric ports or 8 vNICs on each independent server half (16 total per x222 double compute node). High x86 application virtualization density enables MSPs to support more clients and applications on less hardware, saving capital investment and driving up utilization. • POWER processor-based compute nodes offer: POWER7 and POWER7+ ™ processors running AIX, IBM i, or Linux. The POWER7+ processor adds memory compression and AIX file system encryption for better performance, and enhanced energy power gating for even better energy efficiency. It also supports twice as many VMs (20) per core as the POWER7 processor. PowerVM support, featuring Active Memory Sharing, which allows systems to intelligently exchange memory between running partitions for increased optimization of physical memory resources. Active Memory Sharing enables the sharing of a pool of physical memory among logical partitions (LPARs) on a single server, which helps to increase memory utilization and drive down system costs. IBM EnergyScale ™ energy management dynamically optimizes processor performance versus power consumption and system workload. Up to two 2.5-inch HDDs or 1.8-inch SSDs; up to 1.8TB of internal storage. Up to 512GB of DDR3 memory. Up to 24 cores in two sockets and dedicated hardware support for Dual VIOS (p270). Dedicated adapter for configuring Dual VIOS (Virtual I/O Server) for the most reliable and secure environment possible (p270). 3 New hardware accelerators assist with Advanced Memory Expansion and AIX file system encryption (p270). Eight (p24L/p260/p270) or 16 (p460) 10Gb Ethernet ports per compute node to maximize networking resources in a virtualized environment. Support for high-bandwidth I/O adapters, up to two in a p24L, p260, or p270, or up to four in a p460. POWER compute node virtualization supports large scale, multitenant hosting for MSPs.
Benefits include: • Flex System x222 offers extremely high rack density, with up to 112 servers per standard 42U rack (plus switches and other equipment) • The x222 supports over 2800 Windows 7 virtual desktops per chassis, a 60% increase over standard single-density blade offerings 4 • The Flex System x240 supports up to 50% more memory capacity than HP 5
3 www. ibm.com /support/customercare/sas/f/vios/home.html . 4 Fourteen x240s in a chassis can each support 125 virtual desktops at 1.5 GB memory for each desktop (14 x 125=1750). For x222, each server can support 100 desktops. So 28 x 100 = 2800 per chassis for a 60% increase. Why IBM Flex System is the Best Blade Solution on the Market Page 5
• The Flex System p260 4-core entry model supports P05 licensing for IBM I, to reduce licensing costs by up to 80% vs. previous models • Choice, ranging from price-optimized entry nodes to nodes providing the performance required by the most demanding workloads; nodes support a wide array of workloads that require multiple OSes, multiple hypervisors, and multiple processor types—all in a single chassis. • Maximum performance, due to industry-leading memory capabilities and top-end processors.
Chassis Unlike competitive chassis offerings that may have compromised support of future technologies, the IBM Flex System Enterprise chassis is designed for multiple generations of technology. It offers: • 14 standard-width or 7 full-width bays, or any combination, for compute nodes, storage nodes, and expansion nodes • Four scalable high-speed switch bays • Support for 40Gb Ethernet networking • Node-to-node traffic contained within the chassis, to significantly reduce Top-of-Rack (ToR) switch latency • Integrated chassis management • Headroom to support future power and cooling needs: Up to six 2500W power supplies (with N+N multiple- redundancy or N+1 single-redundancy) Up to eight scalable fans • Full redundancy of power, cooling, I/O, and other major components
Benefits include: • Investment protection for datacenter technologies for the next ten-plus years • High resiliency for maximum uptime • Maximum flexibility, supporting multiple fabrics, standard- and double-width compute nodes, and maximum growth potential as new generations of technology emerge
Networking With IBM PureSystems and IBM Flex System, IBM continues to deliver industry-leading networking with simpler management, advanced virtualization capabilities, and technologies for a more intelligent infrastructure. Clients can deploy an integrated infrastructure that works with their existing network environment and also supports advanced 40GbE network technology when needed.
IBM has an advantage over many competitive offerings in that we provide a portfolio of switches and modules that allow for extreme “pay as you grow” scalability. Buy a switch or module today and easily add more bandwidth capacity in the future when your business demands increase with additional compute and storage requirements. IBM switches and interconnect module can support up to 64 10GbE connections from a single module. It’s as simple as buying a license key to turn on more ports. Pay for only the ports you need today, and then turn on the rest over time. Most competitors require you to buy more devices, wait for them to arrive, then install and manage them; or, if you buy and install the devices up-front, they just take up space, tie up your capital, and consume power until needed.
5 Flex System x240 (768GB) compared to HP BL 460c Gen8 (512GB). Why IBM Flex System is the Best Blade Solution on the Market Page 6
IBM also delivers industry-leading network performance with switch switches and an interconnect module capable of latency below 1 microsecond .
One of the biggest bottlenecks for most chassis is networking bandwidth. The Flex System Enterprise chassis design provides more networking flexibility and growth potential than other blade offerings: • Scalable switching, allowing the user to upgrade connectivity/features, without rip-and- replace. • Support for present and future networking technologies: 1Gb, 10Gb, 40Gb Ethernet, and beyond. • The industry’s first 40Gb-capable blade Ethernet uplink switch, 16Gb-capable blade SAN switch, and 56Gb-capable InfiniBand FDR (Fourteen Data Rate) switch. • 40Gb Ethernet uplinks reduce cabling to ToR switches. • Support for Fibre Channel options ranging from low-cost 8Gb to highly scalable16Gb switches for maximum performance. • Feature on Demand (FoD) iSCSI features and upgrades dynamically via software upgrade without hardware outages (avoiding the rip-and-replace approach of some competitive offerings). • Support for the IBM Distributed Virtual Switch 5000V for easy management and switching of VMs in a VMware environment. • Embedded L2/L3 chassis switching to enable a lowest-latency, highest-bandwidth connection for East-West traffic, without involving the Top-of-Rack switches for in-chassis communication. • 10Gb Ethernet pass-thru for easy, unmanaged connectivity of the Flex System Enterprise Chassis to any external network infrastructure. • Support for IBM Flex System Fabric EN4093R 10Gb Scalable Switch with OpenFlow , which delivers innovations to help address a number of networking concerns today and providing capabilities that will help you prepare for the future. This switch is capable of supporting up to 42 x 10Gb downlinks, 14 x 10Gb uplinks, and 2 x 40 Gb uplink Ethernet connections while offering Layer 2/3 switching. It can help clients migrate to a 10Gb or 40Gb Ethernet infrastructure and offers virtualization features like IBM Virtual Fabric and VMready ®, plus the ability to work with IBM Distributed Virtual Switch 5000V. • Support for simple-to-use IBM Flex System Fabric SI4093 System Interconnect Module designed as a low-cost, preconfigured end host 10Gb Ethernet module that can help simplify networking configurations and management while providing simple interoperability. It also offers “pay as you grow” scalability, supporting up to 42 x 10Gb downlinks, 14 x 10Gb uplinks, and 2 x 40Gb uplink Ethernet connections. • Support for IBM Flex System EN6131 40GbE Switch to improve business response time with faster networks. • New I/O adapters that deliver support for Dual VIOS and both converged and non- converged environments: IBM Flex System FC5054 4-port 16Gb FC Adapter (FC EC2E) IBM Flex System CN4058 8-port 10Gb Converged Adapter (FC EC24)
Benefits include: • IBM Flex System Fabric SI4093 System Interconnect Module supports up to 2.5X the bandwidth offered by HP at 42% lower cost 6
6 Based on SI4093 base plus upgrade 1 and 2 (list price x 2 = $53.194), HP Virtual Connect Flex-10/10D x 6 = $75,450 = 41.8% less expensive. SI4093 = 64 x 10Gb ports (640Gb) vs. HP = 26 x 10Gb ports (260Gb) = 2.46x more bandwidth. Why IBM Flex System is the Best Blade Solution on the Market Page 7
• SI4093 can also deliver up to a 55% power savings with fewer devices to manage than the competition 7 • The flexibility to start small and grow when you’re ready. You’re not locked into today’s technology. • Support for 56Gb FDR InfiniBand switches, which some competitors can’t handle • Support for high-bandwidth networking today and tomorrow, as well as across multiple network protocols and topologies, that provides MSPs with ultimate flexibility and the performance that will be required in heavily virtualized cloud, VDI, and big data environments
Storage and I/O An IBM Flex System solution offers the best combination of internal and external storage and I/O capabilities: • IBM Flex System V7000 Storage Node installs inside the chassis, along with the compute and other nodes, providing faster access and easier management. The node intelligently places data across cutting-edge solid-state drives (SSDs) and cost-effective mechanical hard disk drives (HDDs). This data balancing can increase critical application performance by up to 240%.8 It allows an integrated SAN within the chassis, and offers the other capabilities of the Storwize V7000, including FlashCopy ®9, Easy Tier ®10 , and thin provisioning. • IBM Flex System Storage Expansion Node offers direct-attach dedicated local storage (up to 12TB) to an IBM Flex System x220 or x240 compute node. This expansion node supports up to 12 additional 2.5-inch hot-swap drives in mixed configurations (SAS/SATA and SSD), as well as RAID-0/1/5/10/50 standard (with optional RAID-6/60 with Feature on Demand upgrade). Used with an IBM Flex System x220 or x240 compute node, the Storage Expansion Node provides an excellent platform for a low-cost NAS solution. (The OS is not preloaded. The customer has a choice of preferred OS; for example, Windows Storage Server 2012). • IBM Storwize ® V7000 , a modular 2U storage system with up to 12 hot-swap 3.5-inch HDDs or 24 hot-swap 2.5-inch SSDs or HDDs, offers the ability to virtualize IBM and third-party storage with nondisruptive migration of the current storage infrastructure. Up to nine expansion units can be added, for a total of 240 drives per control enclosure (360TB ), 960 per clustered system ( 1440TB ). It can also virtualize and reuse existing storage systems, offering a greater potential return on investment. Virtualized storage inherits all of the storage’s rich function, including FlashCopy, Easy Tier, and thin provisioning. Storwize V7000 supports integrated realtime compression of active data, enabling storage of up to 5X as much primary data in the same physical space, for extraordinary levels of efficiency. • IBM Flex System Flash offers unmatched dedicated storage, with up to 8 enterprise SSDs (1.8TB) in a Flex System compute node, including an SSD-optimized 1GB Super- Capacitor-backed IBM ServeRAID ® adapter. It provides up to 475,000 IOPS for superior database performance with distributed database applications, business analytics and intelligence workloads, transaction processing, and media streaming. These SSDs can also be used like extended, fast memory and can provide “hot data” rapidly to compute elements—an IBM exclusive.
7 Based on SI4093 power: 95W x 2 switches = 190W vs. HP Virtual Connect Flex-10/10D power: 70W x 6 switches = 420W. Therefore SI4093 consumes 54.76% less power. HP link: http://h18000.www1.hp.com/products/quickspecs/productbulletin.html#spectype=north_america&type=html&docid=14408 . 8 Based on IBM internal measurements and Enterprise Strategy Group, IBM Storwize V7000: Real-world Mixed Workload Performance in VMware Environments , Brian Garrett, February 7, 2011. 9 publib.boulder. ibm.com /infocenter/dsichelp/ds6000ic/index.jsp?topic=%2Fcom.ibm.storage.smric.help.doc%2Ff2c_flashcpover_1 m76z6.html . 10 www.youtube.com/watch?v=aggudOKG9go . Why IBM Flex System is the Best Blade Solution on the Market Page 8
• IBM Flex System Storage Expansion Node provides up to 12 in-chassis hot-swap SAS/SATA HDDs or SSDs for a Flex System x220 or x240 compute node, with up to 12TB SATA, 10.8TB SAS, or 3TB SSD capacity. The node can be used for either JBOD or RAID storage. It also supports Network Attached Storage (NAS) workloads. • IBM Flex System PCIe Expansion Node offers unprecedented PCIe expansion capabilities in a blade type environment. The expansion node supports two standard full- height, full-length PCIe Gen 3 slots, and two low-profile PCIe Gen 3 slots. Because it accepts standard PCIe cards, it supports graphics, I/O, and storage adapters—including controllers for external storage servers and SAN adapters—that most blade servers can’t support.
Benefits include: • IBM Flex System is interoperable with other IBM storage solutions, including selected IBM System Storage ®, IBM TotalStorage ® and IBM XIV ® storage systems. • IBM Flex System is also interoperable with selected IBM ServerProven storage options from EMC (CLARiiON and Symmetrix models), Hitachi (VSP), HP (StorageWorks), and NetApp (FAS Series and V Series).11 • Up to 4X the dedicated storage for compute nodes, compared to Dell.12 Much more internal storage than other blades can support. • Faster access of internal storage than for external storage. • Support for FlashCopy and Easy Tier. • Reduced storage needs via realtime compression of active data. • Data automatically optimized among HDDs and SSDs on the node’s tiered storage for better performance. • Added storage reliability via FlashCopy and thin provisioning, which competitors don’t offer. • MSPs have the flexibility to utilize existing storage infrastructures either through virtualization or interoperable direct connectivity across IBM and other storage vendor offerings, or move to fully integrated storage with highly integrated management capabilities for maximum ease of configuration and administration.
Systems Management For today data centers, IT management is always a challenge. Often it is too complex and requires too many on-site visits and too much hands-on time. What’s needed is simplified systems management.
IBM Flex System Manager 1.3 provides a pre-integrated and virtualized management environment across servers, storage, and networking that is easily managed remotely from a single interface. It’s one tool to manage all physical and virtual resources. Features include: • Management support for up to 16 virtualized chassis, 224 nodes and 5000 endpoints from a single Flex System Manager occurrence • A new user interface with a chassis map and overlays, global search, Smart Storage Zoning, and setup wizards, which enables a better management experience and reduces time and steps for most common tasks • Rapidly assess management capacity with Flex System Manager Capacity Utilization, which lets you manage resource planning efficiently • Extensive automation capabilities to help you bring new components online faster
11 For a list of ServerProven storage devices from OEMs, go to www. ibm.com /systems/info/x86servers/serverproven/compat/us/serverproven/indexf.html . 12 IBM Flex System Flash on the x240 Compute Node supports up to 3.2TB, compared to Dell M610 with only 800GB. Why IBM Flex System is the Best Blade Solution on the Market Page 9
• Cross-resource integration to manage applications and workloads, instead of components • Real-time management of systems and workloads on Day One, right out of the box • Switch-neutrality (works with pass-thru modules) • Scalable management as your system grows • Compatibility with the management you already have: other IBM platform tools, including Tivoli ®, and third-party enterprise management (e.g., CA, BMC, HP, etc.) • Upward Integration Modules for both VMware vCenter and Microsoft System Center
Benefits include: • Management integration of resource pools across compute, storage and networking reduces management costs up to 50%.13 • Integrated, automated storage provisioning in up to 98% less time.14 In fact, up to 56 compute nodes can be simultaneously deployed and readied for virtualization. That’s four full chassis at once. • Up to 66% faster set-up time.15 • Improved VM performance and reduced energy use. • Automated responses to potential problems, triggered by alerts, help keep critical business applications running at peak performance. • MSPs can leverage Flex System Manager and Flex System resource integration to get systems up and running quickly for fastest time to monetization of new infrastructure and new services – and continue to experience simplified IT management for lower ongoing total cost of ownership.
IBM Fabric Manager (the evolution of BladeCenter Open Fabric Manager), an optional easy-to- use server provisioning I/O management tool, automates deployment steps, reduces errors, and makes administrators more efficient. Features include: • Automatic provisioning of I/O addresses • Pre-defined configurations of I/O parameters, such as MAC addresses for Ethernet, World Wide Names and SAN boot targets • I/O parameter and VLAN migration to standby compute nodes in case of compute node failure, and executes action plans based on triggered events
Benefits include: • Faster server deployment times • Saving system administrators from doing repetitive and potentially error-prone tasks • A view of data center operations with event triggers and problem notifications
13 Source: ITG whitepaper, “Value Proposition for IBM Next Generation Platform System”. ITG interviewed a group of companies “before” PureFlex System and “after” PureFlex System. The results from the group of 6 companies had a peak predicted administrator efficiency improvement of 57% and an average of 42%. IBM PureFlex System and IBM Flex System solutions benefit similarly from the use of the IBM Flex System Manager. 14 IBM internal Research & Development estimate comparing VMControl’s ability to automatically provision storage to a VM (90- second duration) vs. 2 administrators (storage and server admins) allocating the storage manually without VMControl (2-hour duration). Specific client environments and results may vary. 15 Based on IBM internal Research & Development estimates and measurements. The management server setup for IBM Flex System takes 131 minutes. Equivalent setup for BladeCenter takes 388 minutes. This is based on the “build to order” approach, and is therefore very conservative. In other words, if we were to consider the preconfigured options (Express, Standard, and Enterprise), the savings would be far larger. Only the 66% savings is claimed for conservatism. Compared to previous-generation blade servers. Why IBM Flex System is the Best Blade Solution on the Market Page 10
Summary The IBM Flex System offering provides performance, flexibility, and investment protection that no other blade offering can match. An IBM Flex System solution delivers: • The first storage virtualization solution for internal and external storage • The first high-IOPS flash storage node/blade for unmatched dedicated storage flexibility • The first 40GbE-capable blade uplink switch • The first 16Gb -capable blade SAN switch • The first 56Gb -capable blade InfiniBand FDR switch • A single management tool for all physical resources • Support for AIX, IBM i, PowerLinux, Windows and Linux in one chassis
With the best blades, chassis, networking, storage, and management capabilities, an IBM Flex System solution surpasses blades in every respect 16 .
For more details about the products and technologies, contact an IBM sales rep or business partner, or go to www. ibm.com /systems/pureflex/flex_overview.html.
16 For clients with existing BladeCenter investments, IBM has a committed roadmap. For more information, contact your business partner or IBM representative. Why IBM Flex System is the Best Blade Solution on the Market Page 11
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IBM Flex System Servers http:// ibm.com /systems/pureflex/flex_overview.html IBM PureSystems Expert Integrated Systems http:// ibm.com /ibm/puresystems IBM System x and BladeCenter Power Configurator http:// ibm.com /systems/bladecenter/resources/powerconfig.html IBM Standalone Solutions Configuration Tool http:// ibm.com /systems/x/hardware/configtools.html IBM Configuration and Options Guide http:// ibm.com /systems/x/hardware/configtools.html IBM ServerProven Program http:// ibm.com /systems/info/x86servers/serverproven/compat/us Technical Support http:// ibm.com /server/support Other Technical Support Resources http:// ibm.com /systems/support Legal Information IBM reserves the right to change specifications or other product information without notice. References in this © IBM Corporation 2013 publication to IBM products or services do not imply that IBM IBM Systems and Technology Group intends to make them available in all countries in which IBM Dept. U2SA operates. 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