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Chapter 2 Preparations
1.26
Power Supply Unit
This server can contain two power units supporting the hot-plug feature. 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.
1.26.1
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
automatically.
Cold redundant feature can be used under the following conditions:
•
Two power supply units must be installed for redundant configuration.
•
See Chapter 3 (2. BIOS Setup Utility (SETUP)), 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.
136
Note
AC power supply unit has a cable tie to prevent AC cable from slipping out.
Express5800/R120g-2E User's Guide
1. Installing Internal Optional Devices
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