Blade Server Controls And Leds - IBM BladeCenter QS20 Problem Determination And Service Manual

To avoid loss of data, shut down the Linux operating system before you turn off the
blade server. Shut down the operating system by typing the shutdown -h now
command. See your operating system documentation for additional information
about shutting down the operating system.
If the blade server has not been turned off, 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
v If the operating system stops functioning, you can press and hold the power
v You can use the BladeCenter Management Module Web interface to turn on the
Note: After you have turned off the blade server, wait at least 30 seconds for the

Blade server controls and LEDs

This section describes the controls and LEDs on the blade server.
Power control button: This button is behind the control-panel door. Press this
button to manually turn the blade server on or off.
Note: The power control button has effect only if local power control is enabled for
Figure 2. Power control button
Notes:
v The control panel door is shown in the closed (normal) position in this illustration.
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BladeCenter QS20 Type 0200: Problem Determination and Service Guide
control-panel door). This starts an orderly shutdown of the operating system, if
this feature is supported by your operating system.
Note: After you have turned off the blade server, wait at least 5 seconds before
you press the power control button to turn on the blade server again.
control button for more than 4 seconds to turn off the blade server.
blade server remotely.
hard disk drive to stop spinning before you remove the blade server from the
BladeCenter unit.
the blade server. Local power control is enabled and disabled through the
BladeCenter Management Module Web interface.