Chapter 2. Bladecenter Unit Power, Controls, And Indicators; Supplying Power To The Bladecenter Unit; Disconnecting Power From The Bladecenter Unit - IBM 8677 - BladeCenter Rack-mountable - Power Supply Installation And User Manual

Chapter 2. BladeCenter unit power, controls, and indicators

This section describes how to supply power and disconnect power to the
BladeCenter unit. It also describes the controls and light emitting diodes (LEDs).

Supplying power to the BladeCenter unit

To supply power to the BladeCenter unit, connect one end of the power cord to a
power module on the rear of the BladeCenter unit; then, connect the other end of
the power cord into a 220-volt power distribution unit (PDU). Make sure that the
PDU is connected to an appropriate electrical outlet. The BladeCenter unit does not
have a power switch.
The blade servers in the BladeCenter unit are connected to power but are not
turned on. After the BladeCenter unit is turned on, depending on the configuration
settings, the blade servers might need to be individually turned on.

Disconnecting power from the BladeCenter unit

You can shut down the BladeCenter unit by turning off the blade servers and
disconnecting the BladeCenter unit from the power source.
To disconnect power from the BladeCenter unit, complete the following steps:
1. Shut down each blade server. See the documentation that comes with your
2. Disconnect all power cords on the BladeCenter unit from all the power modules.
© Copyright IBM Corp. 2010
blade servers for instructions for shutting down the operating system.
Statement 5:
CAUTION:
The power control button on the device and the power switch on the
power supply do not turn off the electrical current supplied to the device.
The device also might have more than one power cord. To remove all
electrical current from the device, ensure that all power cords are
disconnected from the power source.
1 2
Note: After you disconnect the BladeCenter unit from power, wait at least 5
seconds before you connect the BladeCenter unit to power again.
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