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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 (IMM2) is shut down; however, the server can respond to
requests from IMM2, such as a remote request to turn on the server.
The power-on LED flashes to indicate that the server is connected to an ac power
source but is not turned on.
Turning on the server
Use this information to turn on the server.
About this task
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. Approximately 10
seconds after the server is connected to input power, the power-on button becomes
active. After the power-on button becomes active, the power-on LED flashes
slowly. You can turn on the server by pressing the power-on button.
Procedure
1. Press the power-on button to turn on the server.
2. 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.
What to do next
1. 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.
2. When you turn on the server with external graphical adapters installed, the
IBM logo displays on the screen after approximately 3 minutes. This is normal
operation while the system loads.
3. Make sure the left-side cover is closed.
Chapter 1. The IBM System x3100 M5 Type 5457 server
25
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Troubleshooting
