Server Power Features; Turning On The Server; Turning Off The Server - IBM 8840 - eServer xSeries 346 Installation 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
(also called the baseboard management controller), 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 is not turned on.

Turning on the server

Approximately 5 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.
The server can also be turned on in any of the following ways:
v If a power failure occurs while the server is turned on, the server will restart
v If your operating system supports the systems-management software for an
v If your operating system supports the Wake on LAN feature, the Wake on LAN
Note: When 4 GB or more of memory (physical or logical) is installed, some

Turning 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. To remove all power from the server, you must disconnect it from the
power source.
Some operating systems require an orderly shutdown before you turn off the server.
See your operating-system documentation for information about shutting down the
operating system.
Statement 5:
CAUTION:
The power control button on the device and the power switch on the power
supply do not turn off the electrical current supplied to the device. The device
also might have more than one power cord. To remove all electrical current
from the device, ensure that all power cords are disconnected from the power
source.
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IBM xSeries 346 Type 8840: Installation Guide
automatically when power is restored.
optional Remote Supervisor Adapter II SlimLine, the systems-management
software can turn on the server.
feature can turn on the server.
memory is reserved for various system resources and might be unavailable
to the operating system. The amount of memory that is reserved for system
resources depends on the operating system, the configuration of the server,
and the configured PCI options.