Server Power Features; Turning On The Server; Turning Off The Server - IBM x3650 M3 Installation And User Manual

Server power features

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

Turning on the server

Approximately 3 minutes after the server is connected to power, the power-control
button becomes active, and one or more fans might start running to provide
cooling while the server is connected to power. 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
automatically when power is restored.
v If your operating system supports the Wake on LAN feature, the Wake on LAN
feature can turn on the server.
For 32-bit operating systems only: Some memory is reserved for various system
resources and is 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.

Turning off the server

When you turn off the server and leave it connected to power, the server can
respond to requests from the IMM, such as a remote request to turn on the server.
While the server remains connected to power, one or more fans might continue to
run. To remove all power from the server, you must disconnect it from the power
source.
Important: To view the error LEDs on the system board, leave the server
connected to a 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.
Chapter 1. The System x3650 M3 server
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