Hikvision – 4TB 3.5″ SATA Surveillance Hard Disk DS40HKVS-VX1
The Hikvision DS40HKVS-VX1 is a 4TB 3.5-inch SATA surveillance hard disk drive built for continuous 24/7 video recording in security systems like DVRs and NVRs. It supports up to 32 to 64 high-definition camera streams, features a 5400 RPM speed, and handles a workload of 180 TB per year.
Capacity: 4 TB
Form Factor: 3.5-inch
Interface: SATA III 6 Gb/sRotation
 Speed: 5400 RPM
Workload Rating: 180 TB/year
Mean Time to Failure (MTTF): 1,000,000 hours