Ch 3: Installing Optional Devices
46 Hitachi PC VisionBase8450H/R Server
Installing Redundant Power Supply
The Hitachi PC VisionBase8450H/R Server allows you to install an optional third power supply unit to implement
redundant power configuration. In such redundant power configuration, even if one of the power units fails, the
remaining twopower units can supply sufficient power, enabling you to keep on operating.
NOTE: When you install an option power unit, you need to add one outlet (three in total).
1. Remove the cover of power slot 3 on the back of the system equipment by removing four mounting screws on
the cover.
NOTE: Store the removed covers properly.
2. Insert the power unit by aligning it with the guide holes, then fix it with four mounting screws.
NOTE: Make sure that the power unit is fully inserted into the system equipment.
Before you start operation, turn off the POWER switch of the system equipment, and unplug the power
cord.
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