LaCie 2big Spare Drive 4TB 4000GB Serial ATA

4TB, RAID, Hot-swap LaCie offers this spare drive and drawer for use with our 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 a failed drive. The capacity of your spare drive must be equal to or higher than the capacity of the drive being replaced.