Server Power Features; Turning On The Server; Turning Off The Server - IBM System x3850 X6 Installation And Service Manual

Table 4. Button on the standard I/O bookserver
Button name
NMI button

Server power features

This topic provides an overview of the server power features.
When the server is connected to a suitable input power source but is not turned
on, the operating system does not run, and all core logic except for the service
processor (the integrated management module) is shut down; however, the server
can respond to requests to the service processor, such as a remote request to turn
on the server. The power-on LED flashes and indicates that the server is connected
to input power but is not turned on.

Turning on the server

This topic provides information about starting the server.
Approximately 5 seconds after the server is connected to input power, one or more
fans might start running and the power-on LED flashes quickly. After the
power-on button becomes active, the power-on LED flashes one flash per second.
You can turn on the server by pressing the power-on button.
If a system input power source failure occurs while the server is turned on, the
server will restart automatically when power is restored.
Note: To disable this feature in the server Setup utility (see "Using the Setup
utility" on page 126), select System Settings → Integrated Management Module →
Power Restore Policy.

Turning off the server

This topic provides information about turning off the server.
When you turn off the server and leave it connected to input power, the server can
respond to requests to the service processor (the integrated management module),
such as a remote request to turn on the server. While the server remains connected
to input power, one or more fans might continue to run. 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.
Chapter 1. The IBM System x3850 X6 and x3950 X6 Types 3837 and 3839 server
Function
This button is on the rear of the standard
I/O book. Press this button to force a
nonmaskable interrupt to the
microprocessor. You might have to use a pen
or the end of a straightened paper clip to
press the button. You can also use it to force
a blue-screen memory dump (use this button
only when you are directed to do so by IBM
Support).
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