Lenovo HS22V Betriebsanweisung PDF herunterladen (Seite 10)

High-performance blade server optimized for virtualization

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10.

expansion units to one blade server is much more cost-effective than installing multiple blade

servers for the same number of adapter slots. (Note: A maximum of one CFFh card is

supported.)

In addition to GPUs, other adapters up to 75W can be used to connect to BladeCenter switch

modules, including Fibre Channel, additional Gigabit Ethernet modules, 10Gb Ethernet,

Converged Network Adapters (CNAs), InfiniBand, SAS, etc.

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 3Gb per second

in each direction (full-

duplex) across the SAS bus, for an aggregate speed of 6Gbps (600MBps). The serial design of

the SAS bus allows maximum performance to be maintained as additional drives are added.

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

– 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 one-

third 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.

High IOPS SSD PCIe Adapters

 IBM 160GB High IOPS SS Class SSD PCIe Adapter (x4 Gen 1—100K IOPS, 750MBps)

 IBM 320GB High IOPS SS Class SSD PCIe Adapter (x4 Gen 1—100K IOPS, 750MBps)

 IBM 320GB High IOPS MS Class SSD PCIe Adapter (x4 Gen 1—100K IOPS, 750MBps)

 IBM 320GB High IOPS SD Class SSD PCIe Adapter (x8 Gen 2—200K IOPS, 1.5GBps)

 IBM 640GB High IOPS MLC Duo Adapter (x8 Gen 2—200K IOPS, 1.5GBps)

For read-intensive transactional workloads requiring extreme IOPS performance, such as

database, video-on-demand, and caching, IBM offers High IOPS SSD PCIe Adapters,

equivalent to the IOPS output of approximately 500

3.5-inch 600GB 15K SAS HDDs, with 99%

lower latency (30 µs), and 7.7x the bandwidth of a HDD. On a performance-per-watt basis,

these adapters outperform HDDs by up to 445x

Because these adapters go in PCIe slots, rather than drive bays, they can be used in addition to

Data transfer rates depend on many factors and are often less than the maximum possible.

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