Lenovo HS22 Betriebsanweisung PDF herunterladen (Seite 15)

Versatile, easy-to-use blade optimized for performance, energy and cooling

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15.

advanced features for availability and manageability. Large cache size and multiple cores,

combined with a 1066MHz or 1333MHz memory access speed, reduce memory latency and

facilitate the movement of data through the processor and I/O devices. (Note: System

performance depends not only on the number of processors in the server but also on the power

and functionality of each processor, as well as the number, capacity, and arrangement of the

DIMMs.) Adding a second processor may be a cost-effective way to achieve significant

performance improvements.

Memory — Memory is a significant factor in systems application performance. Adding more

memory to a BladeCenter server is one of the most effective ways to increase application

performance. For best performance in a server with a quad-core processor, there should be twice

as much memory available as for a dual-core processor. Note: Fewer large-capacity DIMMs may

provide better performance and use less energy than more lower-capacity DIMMs.

I/O Expansion Units — A choice of BladeCenter PCI Express Expansion Unit 3 (BPE3) or

BladeCenter PCI Express Gen 2 Expansion Blade (BPE4) offers from 3 to 10 total adapter slots

per HS22 server, to support additional fabrics (including Ethernet, 10Gb Ethernet, Fibre Channel,

SAS, and Converged Network Adapters), and high-performance graphics processing units

(GPUs).

Hard Disk Drives — IBM hard disk drives help you improve the transaction and cost

performance of your HS22 servers. The choice of hard disk drives can be a critical aspect of

maximizing the I/O throughput of the system. Hot-swap SAS hard disk drives (2.5-inch) are

available for the HS22 with capacities up to 300GB at 10,000 RPMs or up to 146.8GB at 15,000

RPMs. Hot-swap SATA hard disk drives (2.5-inch) are available for the HS22 with capacities up

to 300GB at 10K RPMs. Additional direct-attach storage is available via the BladeCenter S

chassis.

Solid-State Drives — IBM offers a 50GB 2.5-inch solid-state drive as an alternative to internal

HDDs. It can be used as a highly available boot drive or for storing disk images, or for other

primarily read-only uses.

High IOPS SSD PCIe Adapters — For storage media offering up to 500 times the I/O operations

per second (IOPS) and up to 7.7 times the bandwidth of 15,000-RPM HDDs, IBM offers the

160GB High IOPS SS Class SSD PCIe Adapter, the 320GB High IOPS SS Class SSD PCIe

Adapter, the 320GB High IOPS MS Class SSD PCIe Adapter, and the 320GB High IOPS SD

Class SSD PCIe Adapter, as well as the 640GB High IOPS MLC Duo Adapter. These adapters

offer near-DRAM performance, with extremely high data retention (up to 25 years) and RAID-

grade data protection, with 160GB or 320GB capacities.

ServeRAID Controllers — System x servers using ServeRAID technology allow organizations to

build a reliable foundation for business-critical computing. IBM ServeRAID technology allows an

array consisting of multiple physical hard disk drives to be treated as one logical drive.

ServeRAID technology also allows data to be stored redundantly, across multiple hard disk

drives— enhancing both the integrity and the availability of the data. SAS and SATA ServeRAID

controllers offer enhanced performance due to onboard processors and cache. Because IBM

ServeRAID controllers can help significantly improve data transfer rates, this technology is

extremely effective when implementing demanding, transaction-oriented applications. By

employing the advanced fault tolerance of IBM ServeRAID technology, companies can effectively

implement networked business systems that require large amounts of storage space for data and

applications that must be available for their businesses to continue operating.

The optional ServeRAID-MR10ie controller (CIOv form-factor), with up to 6Gbps throughput per

SAS port, adds RAID-5/50/6/60 support and 256MB of cache memory and battery backup, as

well as support for direct-attach BladeCenter S storage or external System Storage expansion

units.

External Storage — The IBM System Storage DS3000, DS4000, DS5000, and DS8000 series,

as well as the System Storage N3000, N5000, N6000, and N7000 series, comprise a powerful

and broad shared storage family with integrated management software designed to meet

midrange and enterprise needs. For lower-end needs, IBM offers the System Storage EXP810

and EXP3000 storage expansion units.

Additionally, external LAN-attached tape storage is available.

Communication Modules — The various BladeCenter chassis support integrated

communication and I/O switches and/or bridges for Gigabit and 10Gb Ethernet, Myricom, 4Gb

and 8Gb Fibre Channel, 1X and 4X InfiniBand, iSCSI, 3Gb SAS, and others. Expansion

adapters for individual HS22 blades are available to interface with these modules. The

BladeCenter H and BladeCenter HT also support the Multi-Switch Interconnect Module, which

doubles the number of Gigabit Ethernet and Fibre Channel connections available to all blades in

the chassis.

Rear Door Heat eXchanger — The unit attaches to the back of an IBM S2 42U Enterprise Rack.

It is capable of removing up to 50,000 BTUs (14KVa) from the data center using water lines

under the raised floor. The door swings open for servicing.

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