User guide

The Redundant Power Supply option provides a second power supply to
supplement the standard supply so that one is always online.
Because this is a hot-pluggable option, it is not necessary to power down the
RA4000. However, be sure to observe these precautions.
To reduce the risk of injury or damage to the equipment, observe
the following guidelines when connecting and disconnecting power to the power
supplies:
■ Install the power supply before connecting the power cord to the power
supply.
■ Unplug the power cord before removing the power supply from the
equipment.
Do not move a working storage system. This could cause hard drive
errors, damage to hard drives, and possible loss of data.