How do I Hot Swap the Redundant Power Supply?
From 45 Drives Technical Information Wiki
The Redundant power supplies provide continuous power to the Pod. The 2+1 Redundant Power Supply allows the user to swap out a single module without system downtime.
STEP 1: Unscrew the thumb-screw on the module you wish to remove.
STEP 2: Pull the leaver to the left and pull the handle.