 Whether you use Fusion storage systems to perform incremental backups or swap out large amounts of data, its always handy to have extra drives around—simplify the swapping by mounting those extra drives to spare drive trays. In seconds instead of minutes, you'll hot-swap your way to greater productivity!  Spare Fusion drive tray is compatible with every Fusion storage system except Fusion DX800RAID, Fusion F2, Fusion F3, and old Fusion 400 models. | ) |