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Chapter 3. BladeCenter unit power, controls, and indicators
This section describes the controls and light-emitting diodes (LEDs) and how to
start and shut down the BladeCenter unit.
Starting the BladeCenter unit
Important: For the LEDs on each system LED panel to function correctly, be sure
to install the management module before starting the BladeCenter unit. See
Chapter 2, “Installing options”, on page 13 for instructions for installing the
management module.
The BladeCenter unit does not have a power switch. To start the BladeCenter unit,
plug one end of each power cord into a power module on the rear of the
BladeCenter unit, and the other end of each power cord into a 220-volt power
distribution unit (PDU) that is plugged into an appropriate electrical outlet.
After you start the BladeCenter unit, it has ac power. The blade servers in the
BladeCenter unit are connected to ac power but are not turned on. Press the
power-control button on the front of each blade server to obtain full power for the
blade server and start its operating system (see the documentation that comes with
your blade server for information about turning on the blade server). Be sure to shut
down the operating system before turning off the blade server, to avoid damaging
the hard disk drives.
Notes:
1. If a power failure occurs, the BladeCenter unit restarts automatically when
power is restored.
2. The blade server power button turns on or turns off the blade server if local
power control has not been disabled through the management module.
3. The blade server power button turns on the blade server only if the green power
light on the blade server is flashing slowly. If the light flashes rapidly, the blade
server has not yet synchronized with the management module and the power
button will have no effect.
© Copyright IBM Corp. 2002, 2003 29