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 the functions of the controls and indicators.
Turning on the blade server
After you connect the BladeCenter unit 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
the control panel door) to start the server.
Notes:
1. 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 server 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 10 for the
power-on LED states.
v
If a power failure occurs, the BladeCenter unit and then the blade server can
start automatically when power is restored (if the blade server is configured
through the management module to do so).
v
You can turn on the blade server remotely by means of the service processor in
the BladeCenter management module.
v
If the operating system supports the Wake on LAN feature and the blade server
power-on LED is flashing slowly, the Wake on LAN feature can turn on the blade
server, if the Wake on LAN feature has not been disabled through the
management module Web interface.
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
panel door). This starts an orderly shutdown of the operating system, if this
feature is supported by the 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.
v
If the operating system stops functioning, you can press and hold the
power-control button for more than 4 seconds to turn off the blade server.
v
The management module can turn off the blade server.
© Copyright IBM Corp. 2003
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