4 Terabyte Surveillance Hard Disk

4TB surveillance hard disk (HDD) is a specialized drive for 24/7 security systems, offering large storage for video, optimized firmware (like AllFrame) to reduce frame drops, high workload ratings (e.g., 180TB/year), and compatibility with multiple HD cameras, featuring reliability for continuous recording, unlike standard desktop drives. Key specs include SATA interface, 3.5-inch form factor, 5400 RPM speed, and large cache, built for constant read/write cycles in DVR/NVRs.