Server Power Features; Turning On The Server - IBM xSeries 445 8870 User Manual

Server power features

When the server is connected to an ac power source but is not turned on, the
operating system does not run, and all core logic except for the service processor is
shut down; however, the server can respond to requests from the service processor,
such as a remote request to turn on the server. The power-on LED flashes to
indicate that the server is connected to ac power but not turned on.

Turning on the server

Approximately 20 seconds after the server is connected to ac power, the
power-control button becomes active, and you can turn on the server and start the
operating system by pressing the power-control button.
v The server can also be turned on in any of the following ways:
v If the server is turned on and a power failure occurs, the server will restart
v If the server is connected to a power source but not turned on, the server can be
v When you connect your server to power for the first time, the Wake on LAN
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xSeries 445 Type 8870: User's Guide
– If a power failure occurs while the server is turned on, the server will restart
automatically when power is restored.
– If the server is connected to an Advanced System Management interconnect
network that contains at least one server with an optional Remote Supervisor
Adapter installed, the server can be turned on from the Remote Supervisor
Adapter user interface.
– If your operating system supports the system-management software for an
optional Remote Supervisor Adapter, the system-management software can
turn on the server.
– If your operating system supports the Wake on LAN feature, the Wake on
LAN feature can turn on the server.
automatically when power is restored.
turned on from the Remote Supervisor Adapter user interface.
feature can turn on the server.
Note: In a 16-way configuration, when you press the power-control button on
either the primary or secondary server, both servers will be turned on. If
both servers do not turn on when either power-control button is pressed,
see the Hardware Maintenance Manual and Troubleshooting Guide on the
IBM xSeries Documentation CD.