Seagate Barracuda ST6000DM003 Hard Drive, 6 TB, SATA/600, 5400 Rpm, buffer 256 MB, Internal, Form Factor 3.5", BarraCuda, 5.30 W, 02 Years Limited Warranty. Seagate brings over 20 years of trusted performance and reliability to the Seagate® BarraCuda® 3.5-inch HDD-now available in capacities up to 8TB.