Chapter 2. Power, Controls, And Indicators; Turning On The Blade Server; Turning Off The Blade Server - IBM HS21 - BladeCenter - 8853 User Manual

Chapter 2. Power, controls, and indicators

This chapter describes the power features, how to turn on and turn off the blade
server, and what the controls and indicators mean. This chapter also identifies the
system-board connectors.

Turning on the blade server

After you connect the blade server to power through the BladeCenter unit, the blade
server can start in any of the following ways:
v You can press the power-control button on the front of the blade server (behind
v If a power failure occurs, the BladeCenter unit and then the blade server can
v You can turn on the blade server remotely by using the management module.
v If the blade server is connected to power (the power-on LED is flashing slowly),

Turning off the blade server

When you turn off the blade server, it is still connected to power through the
BladeCenter unit. The blade server can respond to requests from the service
processor, such as a remote request to turn on the blade server. To remove all
power from the blade server, you must remove it from the BladeCenter unit.
Shut down the operating system before you turn off the blade server. See the
operating-system documentation for information about shutting down the operating
system.
The blade server can be turned off in any of the following ways:
v You can press the power-control button on the blade server (behind the control
© Copyright IBM Corp. 2007
the control panel door, see "Control panel buttons and LEDs" on page 12) to start
the blade server.
Notes:
1. Wait until the power-on LED on the blade server flashes slowly before you
press the power-control button. While the service processor in the
management module is initializing, the power-on LED does not flash, and the
power-control button on the blade server does not respond.
2. While the blade server is starting, the power-on LED on the front of the blade
server is lit. See "Control panel buttons and LEDs" on page 12 for the
power-on LED states.
start automatically when power is restored, if the blade server is configured
through the management module to do so.
the operating system supports the Wake on LAN feature, and the Wake on LAN
feature has not been disabled through the management module, the Wake on
LAN feature can turn on the blade server.
panel door, see "Control panel buttons and LEDs" on page 12). This starts an
orderly shutdown of the operating system, if this feature is supported by the
operating system.
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