IBM 7944, Installation And User Manual

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Approximately 5 seconds after the server is connected to power, one or more fans might start running to
provide cooling while the server is connected to power and the power-on button LED will blink quickly.
Approximately 20 to 40 seconds after the server is connected to power, the power-control button becomes
active (the power-on LED will blink 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:
• If a power failure occurs while the server is turned on, the server will restart automatically when power is
restored.
• If your operating system supports the Wake on LAN feature, the Wake on LAN feature can turn on the
server.
Note:
When 4 GB or more of memory (physical or logical) is installed, 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
Use this information to turn off the server.
When you turn off the server and leave it connected to power, the server can respond to requests from the
service processor, 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.
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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The server can be turned off in any of the following ways:
• You can turn off the server from the operating system, if your operating system supports this feature. After
an orderly shutdown of the operating system, the server will turn off automatically.
• You can press the power-control button to start an orderly shutdown of the operating system and turn off
the server, if your operating system supports this feature.
Chapter 1
.
The Lenovo System x3550 M3 server
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