52
U41621-J-Z156-1-76
Switching the Server On and Off
Preparation for Operation
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When the server is powered on, the Power-on LED switches from
blinking mode (standby) to a solid light.
If the server is switched on and a power failure occurs, it restarts
automatically when power is restored.
4.2.2
Switching Off the Server
When you turn off the server and leave it connected to AC power, the
server can respond to requests from the service processor, such as a
remote request to turn on the server. While the server remains
connected to AC power, one or more fans might continue to run. To
remove all power from the server, you must disconnect it from the power
source.
The power-on LED flashes to indicate that the server is connected to AC
power but not turned on (see section “Front View” on page 45).
Some operating systems require an orderly shutdown before you turn off
the server. See your operating-system documentation for details.
The server can be turned off in any of the following ways:
●
If your operating system is ACPI compatible:
Ê
Shut down the operating system in an orderly manner.
The server will be turned off automatically.
Alternatively,
Ê
Press the power-control button to start an orderly shutdown of the
operating system and to turn off the server.
●
If your operating system is not ACPI-compatible:
Ê
Shut down the operating system in an orderly manner.
Ê
Press the power button to turn off the server.
●
If the operating system stops functioning, you can press and hold the power
button for more than 4 seconds to turn off the server.
The server will then be switched off "by force".
If you switch off the server using this method while the operating
system is running, data loss may occur!
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