Lenovo HS22V Guide de l'utilisateur télécharger pdf (Page 11)

High-performance blade server optimized for virtualization

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11.

standard HDDs and SSDs. This makes them ideal for virtualized servers running multiple tasks,

requiring both write- and read-intensive storage media. As flash media they also offer a

predictable lifetime, compared to the sporadic failure rate of HDDs, using N+1 chip-level

redundancy and 11-bit ECC protection.

Note: The High IOPS Adapters require a BPE4 expansion unit.

If you need more storage space, terabyte capacities are possible with optional external direct-

attach, NAS, and SAN storage solutions.

External Tape Storage

The HS22V supports various external rack-mounted SAN-attached tape drives. Supported tape

technologies include:

• IBM System Storage TS2230 Express Tape Drive

• IBM System Storage TS2240 Tape Drive Model S4E

• IBM System Storage TS2900 Tape Autoloader

• IBM System Storage TS3100 Tape Library

• IBM System Storage TS3200 Tape Library

• IBM System Storage TS3310 Modular Tape Library

• IBM System Storage TS3500 Tape Library

Gigabit Ethernet Controller

The HS22V includes a dual-port integrated Broadcom BCM5709S Gigabit Ethernet controller

for up to 10X higher maximum throughput than a 10/100 Ethernet controller. The controller offers

TOE (TCP Offload Engine) support, as well as failover and load balancing for better throughput

and system availability. It also supports highly secure remote power management using IPMI 2.0,

plus Wake on LAN

and PXE (Preboot Execution Environment) Flash interface.

If 2 ports aren’t enough, optional 2-port or 4-port Ethernet expansion cards can be used for

additional ports. For example, the CIOv slot can hold a 2-port card and the CFFh slot supports a

4-port card, for a total of 8 Gigabit Ethernet ports per HS22V blade. Using BladeCenter Virtual

Fabric increases the number of available ports to 12.

Light Path Diagnostics

Light path diagnostics enables a technician to quickly identify and locate a failed or failing system

component, such as a specific blower module or memory DIMM. This enables quick replacement

of the component, which helps increase server uptime and lower servicing costs.

The front of each blade server—and the chassis itself—has an LED indicator light to show

possible component failures. This lets the servicer identify the failing component without the need

to or remove the blade server from the chassis. The light path diagnostics panel tells the servicer

which component of the affected server requires attention.

In addition, many components have their own identifying LEDs. For example, each of the

memory modules has an LED next to the socket, as do both processors. This allows the servicer

to easily identify exactly which component needs servicing. By following the “light path,” the

component can be replaced quickly, and without guesswork. (Note: In the event of a failed

DIMM, the system will restart and mark the DIMM as bad while offline, thus allowing the system

to continue running, with reduced memory capacity, until serviced.)

BladeCenter Chassis

IBM’s blade architecture offers five choices of compatible and interoperable chassis in which to

use various blade servers. Each chassis serves different customer needs. The new BladeCenter

S is a small, entry-level chassis designed for office environments. The original BladeCenter E

chassis (refreshed with the latest Advanced Management Modules and power supply modules)

offers maximum density, great flexibility and a wide variety of expansion options at an entry-level

price. The next-generation BladeCenter H chassis offers all of BladeCenter’s capabilities, and

adds high-performance features, including 10Gb fabric support. If you need a ruggedized

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.

According to internal IBM testing, the typical maximum IOPS of a 600GB 15K 3.5-inch hot-swap SAS HDD is ~400 (4K random reads),

while the typical IOPS of a 640GB High IOPS SSD PCIe adapter is ~200,000, or ~500x. The typical bandwidth of the same HDD =

~195MBps (64K sequential reads), while the typical bandwidth of a 640GB High IOPS MLC adapter is ~1.5GBps, or ~7.7x.

97,014 IOPS / 9W = 10,779 IOPS per watt (160GB/320GB adapters). 196,000 IOPS / 12W = ~16,333 IOPS per watt (640GB adapters). 400

IOPS / 16.5W = ~24 IOPS per watt (600GB 15K 3.5-inch hot-swap SAS HDD).

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Lenovo HS22V Guide de l'utilisateur Page 11

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