LaCie 2big Quadra, 2big USB 3.0 & 2big Thunderbolt 4TB Spare Drive

The LaCie 2big Quadra, 2big USB 3.0 & 2big Thunderbolt 4 TB Spare Drive and drawer is designed for use with 2big Quadra, 2big Triple, 2big Dual, 2big Network 1.1, 2big Network 2 and 2big NAS. The spare drive and drawer increases security in the unlikely event of a drive failure. You can immediately and easily hot-swap failed drives. The capacity of your spare drive must be equal to or higher than the capacity of the drive being replaced.