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Chapter 2. Power, controls, jumpers, switches, and indicators
This chapter describes the power features, how to turn on and turn off the blade
server, what the controls and indicators mean, and where the system board jumpers
and switches are located and how to use them.
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 means of the service processor in
v If the 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 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. 2005
the control panel door, see "Understanding the control panel 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
pressing the blade server power-control button. During this time, the service
processor in the 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 "Understanding the control panel 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 management module.
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.
panel door, see "Understanding the control panel and LEDs" on page 12). 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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