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Through the BladeCenter Advanced Management Module Web interface, you can
view the blade server firmware code and other hardware configuration information.
Note: Power, cooling, removable-media drives, external ports, and advanced
Power configuration and power throttling
Each blade server is powered by two BladeCenter redundant power-supply
modules. By enforcing a power policy known as power domain oversubscription, the
BladeCenter unit can share the power load between two power modules to ensure
efficient power for each device in the BladeCenter unit. This policy is enforced when
the initial power is applied to the BladeCenter unit or when a blade server is
inserted into the BladeCenter unit. You can configure and monitor the power
environment by using the management module.
For more information about configuring power, see the management-module
documentation.
Boot support
The BladeCenter QS21 can boot from:
v The optical drive of the BladeCenter unit media tray
v A SAS storage device, typically one or more hard disks attached to the
v A storage device attached to the network
Support for local storage
The BladeCenter provides a SAS solution for local storage. This comprises a SAS
Expansion Card attached to the blade server, a SAS switch in the rear of the
chassis, and various options to attach storage to that integrated SAS switch. An
optional SAS Expansion Card is available for the BladeCenter QS21.
Storage can be attached via the external SAS host controller. The BladeCenter
QS21 supports the SAS drives of the IBM System Storage
System Storage EXP3000 expansion unit. Check the IBM BladeCenter support Web
site for details of supported SAS drives at http://www.ibm.com/systems/bladecenter/
support/.
Major components of the blade server
In order to see the components of the BladeCenter QS21 you must remove it from
the BladeCenter unit and remove the cover. Figure 2 on page 4 shows the major
components of the blade server.
system management are provided by the IBM BladeCenter. For more
information, see the relevant BladeCenter guide.
BladeCenter unit
™
DS3200 and the IBM
Chapter 1. Introduction
3
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