IBM HS20 DDR2 ECC Memory, Large HDD Storage Capacity, External Tape Storage, Adapter Slots

Workhorse 2-socket single- or dual-core Intel Xeon blade server

DDR2 ECC Memory

The HS20 ships with 400MHz PC2-3200double data rate II (DDR2) dual-interleaved memory DIMMs for fast access. It supports up to 16GB of memory in four sockets, using industry- standard ECC (Error Checking and Correcting) registered DIMMs. It supports optional Chipkill3 ECC technology (using 1GB or larger DIMMs), for up to 16X better error correction than standard ECC memory.

PC2-3200 memory is available in 512MB, 1GB, 2GB, 4GB and 8GB memory kits (two 256MB, 512MB, 1GB, 2GB or 4GB DIMMs per kit, respectively). DIMMs are installed in pairs for increased performance provided by dual-interleaving.

Large HDD Storage Capacity

The HS20 offers a choice of disk storage, supporting up to two 2.5-inchinternal fixed Ultra320 drives.

•10K RPM 2.5-inch — 36.4 or 73.4GB capacities (146.8GB maximum)

If this is not enough internal storage, an optional “sidecar” storage blade is available. The SCSI

Storage Expansion Unit is a 30mm blade that supports up to two 3.5-inch hot-swap Ultra320

SCSI HDDs. It is installed in the slot adjacent to an HS20 blade server.

•10K RPM 3.5-inch — 73.4, 146.8 or 300GB capacities (600GB maximum)

Fully populating both the HS20 blade and the expansion unit provides up to 746.8GB of local storage to the HS20 blade server. If the customer needs more storage space, terabyte capacities are possible with optional external SAN storage solutions.

External Tape Storage

The HS20 supports various external rack-mounted SAN-attached tape drives. Supported tape technologies include:

•IBM 2U Universal Tape Autoloader

•IBM 4U Universal Tape Library

Gigabit Ethernet Controller

The HS20 includes an integrated Broadcom 5704 dual-portGigabit Ethernet controller for up to 10X higher maximum throughput than a 10/100 Ethernet controller. The integrated controller offers failover and load balancing for better throughput and system availability. It also supports highly secure remote power management using IPMI 1.5, plus Wake on LAN® and PXE (Preboot Execution Environment) Flash interface.

Adapter Slots

The HS20 includes one PCI-Xadapter slot on each blade. Either one legacy BladeCenter expansion card or one SFF (small form factor) BladeCenter adapter can be installed in this slot.

Adapters can be used to add interfaces to BladeCenter communication modules, including Fibre Channel, Myrinet, additional Gigabit Ethernet modules, InfiniBand, etc. Using an SFF adapter allows the use of both internal SCSI HDDs. Using a legacy card limits the number of usable internal HDDs to one.

The SCSI Storage Expansion Unit provides two additional adapter slots for SFF/legacy cards. (The first card must be a Gigabit Ethernet card.)

The optional PCI I/O Expansion Unit II provides two additional slots for standard PCI-X adapters.

3All models require optional Chipkill-enabled DIMMs for Chipkill protection. The DIMMs shipped with the systems are not Chipkill- enabled. Chipkill memory is designed to detect and correct single- and multibit errors. Reliability improvements depend on many factors and may be less than the maximum stated.

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