Server Power Features; Turning On The Server - IBM 8647 - Eserver xSeries 225 Maintenance And Troubleshooting Manual

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 an ac power source but is not turned on.

Turning on the server

Notes:
1. Turn on all external devices, such as the monitor, before turning on the server.
2. The power-on LED on the front of the server is lit when the server is on and
3. You can install a circular disk over the power-control button to prevent
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 the server is connected to an ASM interconnect network that contains at least
v If an optional Remote Supervisor Adapter is installed in the server, the server can
v When you plug in your server for the first time, the Wake on LAN feature can
v If your server was previously turned on, it must be properly turned off for the
Note: When 4 GB or more of memory (physical or logical) is installed, some
38
IBM xSeries 225 Type 8647: Hardware Maintenance Manual and Troubleshooting Guide
while it is powering-up.
accidental manual power-off. This disk, known as the power-control button
shield, comes with your server.
automatically when power is restored.
one system with an optional Remote Supervisor Adapter installed, the server can
be turned on from the Remote Supervisor Adapter user interface.
be turned on from the Remote Supervisor Adapter user interface.
turn on the server. If your server was previously turned on, it must be properly
turned off for the Wake on LAN feature to turn on the server.
Wake on LAN feature to 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 options.