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Standby mode
Standby mode refers to the condition in which the server is connected to an ac
power source but the server operating system is not running and all core logic is
shut down except for the service processor. In Standby mode, the server can
respond to service processor requests, such as a remote request to turn on the
server. When the server is in Standby mode, the power-on LED on the front of the
server flashes (when the server is running, the power-on LED stays on and does
not flash).
You can put the server in Standby mode in any of the following ways:
v You can press the power-control button on the server. This starts an orderly
shutdown of the operating system, if this feature is supported by your operating
system.
v If the server is connected to an ASM interconnect network that contains at least
one system with an optional Remote Supervisor Adapter installed, the server can
be placed in Standby mode from the Remote Supervisor Adapter user interface.
v If an optional Remote Supervisor Adapter is installed in the server, the server can
be placed in Standby mode from the Remote Supervisor Adapter user interface.
Attention: You must disconnect all the server power cords from the electrical
outlets to remove all power from the server.
Complete the following steps to put the server into Standby mode:
1. See the operating system documentation for the proper procedure to shut down
the operating system.
Note: Each operating system is different. Read all the documentation about
shutting down the operating system before continuing.
2. Press the power-control button on the front of the server.
Notes:
a. After you place the server in Standby mode, wait at least 5 seconds before
you turn on the server again.
b. You might need to press and hold the power-control button for more than 4
seconds to cause an immediate shutdown of the operating system and to
force it into Standby mode. You can use this feature if the operating system
stops functioning.
The
ISMP can put the server in Standby mode as an automatic response to a
critical system failure. You can also put the server into Standby mode remotely by
means of an optional Remote Supervisor Adapter or through connection to an ASM
interconnect network.
14 IBM xSeries 235 Type 8671: User’s Guide