Designed for desktops, all-in-one PCs, home servers, and entry-level direct-attached storage (DAS) devices, the 1TB BarraCuda SATA III 3.5" Internal HDD from Seagate offers a storage capacity of up to 1TB and operates using a SATA III 6 Gb/s interface and a 256MB cache, both of which help to ensure uninterrupted data transfers with a sustained data transfer rate of up to 220 MB/s.