Server Power Features; Turning On The Server; Turning Off The Server - IBM xSeries 455 Installation Manual

RXE Management Port connector: Connect a remote I/O enclosure to this
connector.
SCSI connector: Connect a SCSI device to this connector.
SMP Expansion Port 3 connector: Use this connector to connect the server to
other servers and form multi-node configurations.
SMP Expansion Port 2 connector: Use this connector to connect the server to
other servers and form multi-node configurations.
SMP Expansion Port 1 connector: Use this connector to connect the server to
other servers and form multi-node configurations.

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 service processor is
shut down; however, the server can respond to requests from the service processor,
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 20 seconds after the server is connected to ac power, the
power-control button becomes active, and 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
v If ac power is present, the server can be turned on from the Remote Supervisor
v The Wake on LAN feature can turn on the server.
Notes:
1. The power supplies are hot-swappable and redundant only at 200-240 V ac.
2. Both power supplies must be connected to the power source for operation at
3. During normal operation, both power supplies must be installed for proper
4. While the server is powering up, the power-on LED on the front of the server is
5. When you press the power-control button on any server in a scalable partition,

Turning off the server

When you turn off the server and leave it connected to ac power, the server can
respond to requests from the service processor, such as a remote request to turn
on the server. To remove all power from the server, you must disconnect it from the
power source.
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xSeries 455: Installation Guide
automatically when power is restored.
Adapter user interface.
100-127 V ac.
operation.
lit. When the server is connected to ac power but is not turned on, the power-on
LED on the front of the server flashes.
all servers in the scalable partition will be turned on. If the servers do not turn
on when the power-control button is pressed, see the Hardware Maintenance
Manual and Troubleshooting Guide on the IBM xSeries Documentation CD.