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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
v If the operating system stops functioning, you can press and hold the
© Copyright IBM Corp. 2006
the control panel door, see "Understanding the control panel and LEDs" on page
14) to start the blade server.
Notes:
1. Wait until the power-on LED on the blade server flashes slowly before
pressing 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 "Understanding the control panel and LEDs" on page 14 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 "Understanding the control panel and LEDs" on page 14). 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.
power-control button for more than 4 seconds to turn off the blade server.
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