Capacity: 1TB storage.
Interface: SATA 6Gb/s.
Cache: 64MB buffer.
RPM: 5400 RPM.
Reliability: Designed for continuous use, up to 180 TB/year workload rating.
TOSHIBA S300 1TB 3.5 inch Surveillance Internal Hard Drive – SATA 6 Gb/s 5700 RPM 64 MB Cache