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Chapter 2. Blade server 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.
Turning on the blade server
After you connect the BladeCenter unit to ac power, 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 means of the service processor in
v If your operating system supports the Wake on LAN feature and the blade server
Turning off the blade server
When you turn off the blade server, it is still connected to ac 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 your operating system before you turn off the blade server. See your
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. 2002
the control panel door) to start the server.
Notes:
1. After you plug the power cords of your BladeCenter into the electrical outlets,
wait until the power-on LED on the blade server flashes slowly before
pressing the blade server power-control button. During this time, the service
processor in the BladeCenter management module is initializing; therefore,
the power-control button on the blade does not respond.
2. While the blade server is powering up, the power-on LED on the front of the
server is lit. See "Blade server controls 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 BladeCenter management module to do so).
the BladeCenter management module.
power-on LED is flashing slowly, the Wake on LAN feature can turn on the blade
server under the following conditions:
– The Wake on LAN feature has not been disabled.
– If the blade server was previously turned on, the operating system was shut
down properly.
panel door). This starts an orderly shutdown of the operating system, if this
feature is supported by your operating system.
Note: After turning off the blade server, wait at least 5 seconds before you press
the power-control button to turn on the blade server again.
11
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