For 4k and other bandwidth hungry workflows external storage needs to be fast secure reliable and quiet the lacie 5big fits the bill delivering thunderbolt 2 speeds for 4k video editing up to 30 tb capacity and hardware raid 56 for no compromise data security thunderbolt 2 power for professional 4k workflows up to 1050mbs speeds for 4k video editing hardware raid 56 with hot swap dual thunderbolt 2 ports for daisy chaining aluminum enclosure and whisper quiet