IBM 8852 User Guide - Page 27

BladeCenter unit power, controls, and indicators, Supplying power to the BladeCenter unit

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Chapter 2. 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. Supplying power to the BladeCenter unit To supply power to the BladeCenter unit, connect one end of each power cord to a power connector on the rear of the BladeCenter unit and the other end of each power cord to a 220-volt power distribution unit or 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 has power, depending on the configuration settings, the blade servers might have 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 blade servers for the procedure 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. 2 / 3 1 / 4 2. Disconnect all power cords on the BladeCenter unit from the power connectors. Attention: The power cords on the rear of the BladeCenter chassis are not approved to be connected or disconnected under power. You must first disconnect the power cords from the ac power source; then, you can remove the power cords from the chassis connectors. Note: After you disconnect the BladeCenter unit from power, wait at least 5 seconds before you connect the BladeCenter unit to power again. © Copyright IBM Corp. 2010 11

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Chapter 2. 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.
Supplying power to the BladeCenter unit
To supply power to the BladeCenter unit, connect one end of each power cord to a
power connector on the rear of the BladeCenter unit and the other end of each
power cord to a 220-volt power distribution unit or 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 has power, depending on the configuration
settings, the blade servers might have 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
blade servers for the procedure 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.
2 / 3
1 / 4
2.
Disconnect all power cords on the BladeCenter unit from the power connectors.
Attention:
The power cords on the rear of the BladeCenter chassis are not
approved to be connected or disconnected under power. You must first
disconnect the power cords from the ac power source; then, you can remove
the power cords from the chassis connectors.
Note:
After you disconnect the BladeCenter unit from power, wait at least 5
seconds before you connect the BladeCenter unit to power again.
© Copyright IBM Corp. 2010
11