Product guide

High-performance blade server optimized for virtualization
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For increased availability, the HS22V offers an additional level of IBM Active Memory protection: memory
mirroring.
Memory mirroring works much like disk mirroring. The total memory is divided into two channels. Data is
written concurrently to both channels. (The third channel is unused.) If a DIMM fails in one of the DIMMs
in the primary channel, it is instantly disabled and the mirrored (backup) memory in the other channel
becomes active (primary) until the failing DIMM is replaced. With mirroring enabled, one-third of total
memory (4 DIMMs) is available for use. (Note: Due to the double writes to memory, performance is
affected.) Mirroring is handled at the hardware level; no operating system support is required.
DDR3 memory is available in 1GB, 2GB, 4GB and 8GB DIMMs. DIMMs are installed individually by
processor. In other words, individually in a 1-processor system, or in pairs for a 2-processor system.
High Performance/High-Availability Internal Storage
The HS22V supports up to two fixed 1.8-inch solid-state drives (SSDs) internally:
• SATA-based solid-state — 50GB capacity (100GB maximum)
 High I/O Performance
– Offers up to 8X more IOPS than HDDs (67/33% read/write OLTP transaction base mix);
– Optimized for heavy mix of read and write operations, such as transaction processing, media
streaming, surveillance, file copy, logging, backup / recovery, and business Intelligence
 Lower-Cost IOPS Performance
– Yields better $/IOPS: lower capacity (GB) required to achieve higher IOPS
– Consumes less energy and produces less heat than a conventional disk drive
 Superior Uptime
– 3X the reliability of mechanical disk drives
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– No moving parts to fail
– Enterprise wear-leveling to extend life even further
 Full OS Support
– Supports all ServerProven OSes
Due to the statistically higher failure rates for traditional spinning media, IBM recommends the
use of the solid state drives (SSDs) as an alternative. They store data on flash memory chips,
rather than on magnetic media. Like HDDs, SSDs can be used as boot media and for random
access storage. However, SSDs offer higher thresholds of shock and vibration, and a higher
operating temperature range (between 0 and 70 degrees C). This yields a failure rate only 1/3
that of HDDs (approximately 3,000,000 hours MTBF vs. 1,000,000 hours). In addition, the IBM
50GB 1.8” Solid State Drive requires only 2W. This reduces the storage power requirement
and heat output by as much as 80%, compared to 2.5-inch HDDs. If used as a boot device, no
special device drivers are required. Additional storage is available via the BladeCenter S
chassis.
If you need more storage space, terabyte capacities are possible with optional external direct-
attach, NAS, and SAN storage solutions.
Disk Controllers
All HS22V models include an integrated LSI 1064E SAS/SATA controller. This controller
supports up to two internal SAS or SATA HDDs or two internal solid-state drives and offers
hardware RAID-0/1/1E support. (RAID-1E requires 3 or more drives.) 256MB of optional battery-
backed cache memory is available.
An optional ServeRAID-MR10ie controller (CIOv form-factor) adds RAID-5/50/6/60 support for
direct-attach BladeCenter S storage or external IBM System Storage EXP700, EXP710, or
EXP3000, along with 256MB of cache memory and battery backup.
These controllers provide data transfer speeds of up to 300Gb per second
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in each direction
(full-duplex) across the SAS bus, for an aggregate speed of 6Gbps (600MBps), approximately
double that of Ultra320 SCSI’s 320MBps (half-duplex) bandwidth. The serial design of the SAS
bus allows maximum performance to be maintained as additional drives are added.
Integrated Virtualization
HS22V offers a separately orderable IBM 2GB USB Flash Drive option preloaded with VMware
ESXi 3.5 or 4.0 (an embedded version of VMware ESX Server). Microsoft Hyper-V
®
and Xen
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MTBF of 73GB 2.5-inch 10K RPM HDD for the first 12 months = 305,167. MTBF of solid-state SanDisk SDD SATA 5000 2.5-inch 16GB =
918,298.
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Data transfer rates depend on many factors and are often less than the maximum possible.