Seagate Skyhawk 4 TB Hard Drive - 3.5" Internal - SATA (SATA/600)

Specification Details Capacity 4 TB Form Factor 3.5-inch Internal HDD Interface SATA III (6 Gb/s) Model ST4000VX016 Recording Technology CMR (Conventional Magnetic Recording) Cache 256 MB Maximum Sustained Transfer Rate Up to 180 MB/s Workload Rating 180 TB/year MTBF 1,000,000 hours Supported Drive Bays Up to 16 Supported Cameras Up to 64 HD cameras RV Sensors Yes Power-On Hours 24×7 operation (8,760 hours/year) Warranty 3 Years SkyHawk Health Management Supported (compatible systems)