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1. Installing Internal Optional Devices
Express5800/R120g-2M User’s Guide
116
Chapter 2 Preparations
1.27
Power Supply Unit
This server can contain two power supply units. The server provides a redundant power configuration that
ensures continued operation of the system in the unlikely event one of the power supply units fails.
Tips
AC power supply unit has a cable tie to prevent AC cable from slipping out.
Cold Redundant Feature
1.27.1
The server supports the feature to optimize power efficiency as described below:
Cold redundant feature can run the system with optimum power efficiency by raising operating efficiency of
primary power supply unit and lowering that of redundant power supply unit in redundant power
configuration.
If power efficiency of power units is not optimized due to system configuration, this feature is disabled
automaticlly.
Cold redundant feature can be used under the following conditions:
Two power supply units must be installed for redundant configuration.
See
Chapter 2 (1. System BIOS) in "Maintenance Guide"
, change parameters as shown below, save the
settings and exit from SETUP.
Server
Power Control Configuration
Cold Redundant Mode
Enabled
Run SETUP again, and check if the status of
Cold Redundant Mode
shows
Enabled
in
Server
menu.