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v Ethernet activity LEDs: When these LEDs are lit, they indicate that the server is
v Ethernet link LEDs: When these LEDs are lit, they indicate that there is an
v Ethernet connectors: Use either of these connectors to connect the server to a
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 or optional Remote Supervisor Adapter II
SlimLine) is shutdown; 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 5 seconds after the server is connected to ac power, the
power-control button becomes active, and one or more fans 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 you installed an optional Remote Supervisor Adapter II SlimLine, the server can
v If your operating system supports the Wake on LAN feature, the Wake on LAN
Note: When 4 GB or more of memory (physical or logical) is installed, some
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. While the server remains connected to ac 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.
14
IBM System x3550 Type 7978: User's Guide
transmitting to or receiving signals from the Ethernet LAN that is connected to
the Ethernet port. See "Connecting the cables" on page 46 for the LED location.
active link connection on the 10BASE-T, 100BASE-TX, or 1000BASE-TX
interface for the Ethernet port. See "Connecting the cables" on page 46 for the
LED location.
network.
automatically when power is restored.
be turned on from the Remote Supervisor Adapter II SlimLine user interface.
feature can 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.
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