Server Power Features - IBM System x3250 M4 Installation & User Manual

v Power-supply error (!) LED: When this yellow LED is lit, it indicates that the
v Power cord connector: Connect the power cord to this connector.
v Video connector: Connect a monitor to this connector.
v Serial connector: Connect a 9-pin serial device to this connector. The serial port
v
v Ethernet connectors: Use either of these connectors to connect the server to a
v NMI button: Press this button to force a nonmaskable interrupt to the

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 integrated
management module II is shut down; however, the server can respond to requests
to IMM2, 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 1 to 3 minutes after the server is connected to ac power, the
power-control button becomes active (the power-on LED flashes slowly), and one or
more fans might start running to provide cooling while the server is connected to
power. You can turn on the server 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 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 to IMM2, such as a remote request to turn on the server. While
the server remains connected to ac power, one or more fans might continue to run.
To remove all power from the server, you must disconnect it from the power source.
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IBM System x3250 M4 Type 2583: Installation and User's Guide
the ac and dc power LEDs are lit. For any other combination of LEDs, see the
Problem Determination and Service Guide on the IBM System x Documentation
CD.
power supply has failed. For any other combination of LEDs, see the Problem
Determination and Service Guide on the IBM System x Documentation CD.
is shared with the integrated management module II (IMM2). The IMM2 can take
control of the shared serial port to redirect serial traffic, using Serial over LAN
(SOL).
USB connectors: Connect a USB device, such as a USB mouse, keyboard, or
other device to any of these connectors.
network. When you use the Ethernet 1 connector, the network can be shared
with the IMM2 through a single network cable.
microprocessor. You might have to use a pen or the end of a straightened paper
clip to press the button. It allows you to blue screen the server and take a
memory dump (use this button only when directed by the IBM service support).
automatically when power is restored.
feature can turn on the server.
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 devices.