HGST Deskstar NAS 3.5" 4TB 7200 RPM 128MB Cache SATA 6.0Gb/s High Performance Internal Hard Drive

For exceptional reliability and performance in consumer and commercial desktop NAS systems, choose the Deskstar® NAS 7200 RPM HDD. This drive transfers data 20% faster than 5400 RPM drives, with seek times less than 12ms. The innovative rotational vibration sensor anticipates disturbances and counteracts them in multi-drive environments-maintaining high input/output performance.