Lenovo HS22 Betriebsanweisung Seite 11

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Versatile, easy-to-use blade optimized for performance, energy and cooling
Please see the Legal Information section for important notices and information.
11.
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.)
Gigabit Ethernet Controllers
The HS22 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.
For additional Gigabit Ethernet controllers, an optional 2-port or 4-port Ethernet expansion card
adds additional Gigabit Ethernet ports.
High-Performance Adapter Slots
The HS22 blade server includes two x8 PCIe adapter slots. They support CFF (compact form
factor) cards: one standard-speed CIOv and one high-speed CFFh.
The BladeCenter PCI Express I/O Expansion Unit 3 (BPE3) adds 2 standard full-height/full-
length x16 physical/x8 electrical (4GBps) PCIe Gen 1 expansion card slots, supporting adapters
of up to 25W apiece to an HS22. One BPE3 can be connected per HS22 blade, for a total of 3
available slots (1 in the blade and 2 in the expansion unit). Note: The BPE3 reserves the high-
speed CFFh expansion connector in the HS22, leaving only the CIOv slot available.
Similarly, the optional BladeCenter PCI Express Gen 2 Expansion Blade (BPE4) adds 1
standard full-height/full length and 1 standard full-height/half-length x16 physical/x8
mechanical (8GBps) PCIe Gen 2 expansion card slot per HS22 blade. These slots support two
industry-standard PCIe adapters, up to 75W per adapter. The BladeCenter PCI Express Gen 2
Expansion Blade offers a unique stacking feature that allows clients to stack up to 4 expansion
blades per HS22 blade, offering up to an additional 8 PCIe slots per HS22 blade. Note: Unlike
the BPE3, the BPE4 does not reserve the high-speed CFFh expansion connector in the HS22,
leaving both slots available in the server.
If I/O slots are a greater need than processors or memory, attaching multiple I/O 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.)
Common PCIe adapters used to connect to BladeCenter switch modules, include Fibre Channel,
additional Gigabit Ethernet cards, 10Gb Ethernet, Converged Network Adapters (CNAs),
InfiniBand, SAS, etc.
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 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 new high-performance features. If you need a ruggedized chassis (for
example, government/military or telecom), BladeCenter T offers special features optimized for
those environments. (HS22 is not supported in the BladeCenter T.) The next-generation
BladeCenter HT is a high-performance ruggedized telecommunications platform. There is a
high degree of interchangeability and compatibility of features among the chassis. Any or all of
these chassis can be installed in a rack along with other rack-optimized equipment.
See the separate BladeCenter Chassis Sales Guide for details.
Hot-Swap/Redundant Components
System availability is maximized through the extensive use of hot-swap and redundant
components, both in the blade server and in the various BladeCenter chassis, including:
Redundant memory protection (with Chipkill error correction and memory mirroring or memory
sparing enabled)
Hot-swap, redundant hard disk drives and solid-state drives (with RAID protection)
Hot-swap, redundant power supply modules
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