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Installing System Components 155
Removing a Power Supply
CAUTION: The system requires one power supply to operate the system normally.
On power-redundant systems, remove and replace only one power supply at a time
in a system that is powered on.
1
Disconnect the power cable from the power source.
2
Disconnect the power cable from the power supply and remove the Velcro
straps that bundle and secure the system cables.
NOTE: You may have to unlatch and lift the optional cable management arm if
it interferes with power-supply removal. For information about the cable
management arm, see the system’s rack documentation.
3
Pull the power supply straight out to release it from the power distribution
board and clear the chassis.
If you are permanently removing the power supply, you must install a
power supply blank to ensure proper system cooling. See "Installing the
Power Supply Blank" on page 157.
Table 3-5. Power Supply Redundancy Modes With a 1 GbE I/O Card
Number of Power Supplies Redundancy Mode System Configuration
1 1+0* Non-redundant
configuration
2 1+1* Redundant configuration
2 2+0 Non-redundant
configuration
3 2+1 Redundant configuration
4 2+2 Redundant configuration
*indicates that the system operates with a limited load.
book.book Page 155 Wednesday, January 20, 2010 10:20 AM