The IBM BladeCenter LS21 servers are high-throughput, two-socket, SMP-capable, AMD Opteron-based blade servers. This two-socket AMD Opteron blade server is well suited to HPC and other applications requiring high performance and high-speed fabrics.  The processors used in these blades are standard- and low-power, full-performance Opteron processors. The standard AMD Opteron processors draw a maximum of 95 W. Specially manufactured low-power processors operate at 68 W or less without any performance trade-offs. This savings in power at the processor level combined with the smarter power solution that BladeCenter delivers make these blades very attractive to clients who have limited power and cooling resources.  The IBM LS21 supports the Windows and Linux operating systems.

The IBM LS21 type 7971 is a 30 mm blade, capable of supporting up to two dual-core AMD Opteron processors, up to 32 GB of ECC memory and one fixed SAS HDD.  The IBM LS21 blade server supports up to two of the dual-core 2200 series AMD Opteron processors.  Dual Gigabit Ethernet controllers are standard, providing high-speed data transfers and offering TOE (TCP Offload Engine) support, load-balancing and failover capabilities. With optional expansion cards, the LS21 can connect to additional Ethernet, Myrinet, Fibre Channel, iSCSI, InfiniBand and other high-speed communication switches housed in the chassis. Optional expansion cards add additional fabrics to the IBM LS21 as needed.  This blade is designed with power management capability to provide customers with the maximum uptime possible for their systems. In extended thermal conditions, rather than shut down completely, or fail, the IBM LS21 automatically reduces the processor frequency to maintain acceptable thermal levels.

The BladeCenter IBM LS21 is a single-width blade server that offers these features:

• Up to two high-performance, AMD Dual-Core Opteron processors
• System board containing eight DIMM connectors, supporting 512 MB, 1 GB, 2 GB, or 4 GB DIMMs. Up to 32 GB of system memory is supported with 4 GB DIMMs.
• SAS controller, supporting one internal SAS drive (36 or 73 GB) and up to three additional SAS drives with optional SIO blade.

Highlights:

• Reduced power consumption and enhanced energy efficiency without compromising performance
• Easy integration, an open infrastructure and remote systems management for enhanced usability
• Flexible configurations with compatibility across a full portfolio of chassis, I/O and storage to protect long-term investment

Tasks like collaboration or Web serving require blade servers that will do the job efficiently without inflating power costs. The IBM BladeCenter LS21 is ideal for general-purpose applications since it saves energy without sacrificing performance. Combined with the energy-efficient BladeCenter E chassis, it’s the ultimate solution for power-constrained data centers.

Product Features:

• Revolutionary form factor delivers high density for the data center
• Integrated systems management processor, light path diagnostics and IBM Predictive Failure Analysis® combine to provide powerful management capabilities
• IBM Director provides remote management from a single graphical console—helping simplify and automate IT and networking tasks
• Easily add or change blades without disrupting the operation of other blades installed in the chassis

Hardware Summary:

• Features up to two high-performance dual-core AMD Opteron processors
• One internal SAS hard disk drive or one internal solid-state drive
• 1 GB standard/32 GB max memory per blade
• Two TCP/IP Offload Engine-enabled (TOE) Gigabit Ethernet controllers standard, with load balancing and failover features
• Expansion capabilities for Fibre Channel, Ethernet, Myrinet and InfiniBand
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Models:

7971AC1, 7971MC1, 797151U, 79717AU, 797161U, 7971E1U, 79718AU, 79712TU

IBM LS21 Features and Specifications

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