This feature adds a left-side drive cradle for accepting up to two 3592 Tape Drive canisters in a rack. The feature also provides a shelf capable of supporting a left-and right-side drive cradle, as well as rack panels for covering either cradle. It includes two redundant power supplies, drive identification logic for up to two TS1120 or 3592 Tape Drives, and a pluggable large display and control panel for the drives.