Server Power Features - IBM x3400 - System - 7975 User 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
(the baseboard management controller (BMC) or optional Remote Supervisor
Adapter II SlimLine) is shut down; however, the server can respond to remote
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 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 one or more fans (some models) might
start running to provide cooling while the server is connected to power. 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 your operating system supports the systems-management software for an
v If your operating system supports the Wake on LAN feature, the Wake on LAN
v If an optional Remote Supervisor Adapter II SlimLine is installed in the server, the
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 peripheral component interconnect (PCI, PCI Express, or PCI-X) options.
automatically when power is restored.
optional Remote Supervisor Adapter II SlimLine, the systems-management
software can turn on the server.
feature can turn on the server.
server can be turned on from the Remote Supervisor Adapter II SlimLine user
interface.
Chapter 1. The System x3400 server
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