For 4K and other bandwidth-hungry workflows, external storage needs to be fast, secure, reliable, and quiet. The new LaCie 5big fits the bill, delivering Thunderbolt 2 speeds for 4K video editing, up to 30TB capacity, and hardware RAID 5/6 for no-compromise data security. Thunderbolt 2 Speeds for the 4K Era With Thunderbolt 2 technology, the interface is no longer the performance bottleneck. For the 5big, LaCie harnessed the breakthrough performance potential of the Thunderbolt 2 I/O, squeezing the absolute best speeds out of the hard disks. Add a hardware RAID controller and 7200RPM disks and the result is incredible, sustained speeds of up to 1050MB/s that turbocharge 4K workflows, file transfers, and backups. LaCie 5big DAS Array - 5 x HDD Supported - 5 x HDD Installed - 20TB Installed HDD Capacity is one of many NAS (Network-Attached Storage) available through Office Depot. Made by LaCie.