WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5″ Surveillance Hard Drive

**WD Purple WD42PURZ 4TB Surveillance Hard Drive**
Optimized for 24/7 surveillance systems, this 4TB HDD features 5400 RPM speed, a 256MB cache, and SATA 6.0Gb/s for seamless high-definition video streaming and recording. Engineered with **AllFrame technology** to reduce frame loss and ensure smooth playback, it supports up to 64 cameras simultaneously. Built for durability in always-on environments, it offers enhanced workload handling (180 TB/year) and compatibility with mainstream security systems. Energy-efficient and vibration-resistant, the WD Purple ensures reliable, long-term storage for critical surveillance data, making it ideal for home or business security setups.