1 2 3 4 The 120GB REV Disk Backup Media from Iomega is designed for use in Iomega REV backup drives. The disk holds 120GB data. Three labels are included, and the disk is covered by a 5-year warranty. Fast Backup The REV disk is a hard drive based backup technology, giving you access to your data that can be up to eight times faster than tape backup. Because it mounts as a normal hard drive, you can even drag and drop specific files that you would like to recover. 120GB Capacity The 120GB capacity disks give you plenty of room to backup critical system data, but you can easily purchase more REV disks if you find yourself needing more capacity.