Standby Mode - IBM eServer xSeries 255 Installation Manual

4. Disconnect the server from the power source.

Standby mode

Standby mode refers to the condition in which the server operating system is not run-
ning and all core logic is shut down except for the optional Remote Supervisor
Adapter. In Standby mode, the server can respond to ISMP 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:
•
•
•
Complete the following steps to put the server in Standby mode:
1. See the operating-system documentation for the proper procedure to shut down
2. Press the power-control button on the front of the server.
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 intercon-
nect network.
30
IBM xSeries 255 Type 8685:Installation Guide
Note: After disconnecting all the power cords, wait approximately 15 seconds for
your system to stop running. Watch for the power-on LED on the front of
the server to stop flashing.
You can press the power-control button on the server. This starts an orderly shut-
down of the operating system, if this feature is supported by your operating sys-
tem.
If the server is connected to an ASM interconnect network which 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.
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.
the operating system.
Note: Each operating system is different. Read all the documentation about shut-
ting down the operating system before continuing.
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.