IBM QS21 User Guide - Page 19

Power, configuration, power, throttling, support, Support, local, storage, Major, components, blade

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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 system management are provided by the IBM BladeCenter. For more information, see the relevant BladeCenter guide. 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 BladeCenter unit 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™ DS3200 and the IBM 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. Chapter 1. Introduction 3

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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
system
management
are
provided
by
the
IBM
BladeCenter.
For
more
information,
see
the
relevant
BladeCenter
guide.
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
BladeCenter
unit
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
™
DS3200
and
the
IBM
System
Storage
EXP3000
expansion
unit.
Check
the
IBM
BladeCenter
support
Web
site
for
details
of
supported
SAS
drives
at
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.
Chapter
1.
Introduction
3