1. Installing Internal Optional Devices
Express5800/R120e-1M User’s Guide
106
Chapter 2 Preparations
1.19
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.
Select a suitable power supply unit according to System Configuration Guide.
Tips
AC power supply unit has a cable tie to prevent AC cable from slipping out.
1.19.1
Cold Redundant Feature
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. Details of 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.
