Product Details Key specifications and features: Capacity: 4TB Form factor: 3.5 inch Interface: SATA III 6 Gb/s RPM: 5400 (optimized for low power and heat) Cache: 256 MB Maximum sustained transfer rate: up to 175 MB/s Workload rating: up to 180 TB/year, designed to handle write-intensive surveillance workloads Supports up to 64 HD cameras and up to 16 drive bays Equipped with Western Digital’s exclusive AllFrame™ technology to reduce frame loss and improve video playback MTBF (Mean Time Between Failures): up to 1 million hours Designed to operate reliably in harsh surveillance environments with heat and vibration resistance Warranty: 3 years limited warranty Dimensions: 147 mm x 101.6 mm x 26.1 mm
