Synology 4TB HAT5320 SATA III 3.5" Internal Enterprise HDD

Designed to tackle demanding, high-volume workloads in 24/7 environments, the 4TB HAT5320 SATA III 3.5" Internal Enterprise HDD from Synology delivers greater multi-client sequential read performance and high levels of reliability. The HAT5320 has a Mean Time Before Failure (MTBF) rating of 2 million hours, a yearly workload rating of 550TB, and is filled with regular air. Also featured is a storage capacity of 4TB, a SATA III 6 Gb/s interface, a 512MB cache, and a rotational speed of 7200 rpm, all of which help to ensure uninterrupted data transfers with sustained speeds of up to 281 MB/s.