Removing a power supply, 1 disconnect the power cable from the power source, Table 3-5 lists – Dell PowerEdge R910 User Manual
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Installing System Components
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 156.
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.
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