WD Purple NV 4TB Surveillance Hard Disk Drive – 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch – WD4NPURX

**WD Purple NV 4TB Surveillance Hard Disk Drive (WD4NPURZ)**
Optimized for 24/7 surveillance systems, this 5400 RPM HDD features **AllFrame+ AI technology** to minimize video frame loss and ensure smooth playback in AI-driven security setups. With a 64MB cache, SATA 6Gb/s interface, and support for up to 32 HD cameras, it delivers reliable high-capacity (4TB) storage for continuous recording. Built to withstand harsh environments, it offers vibration resistance, enhanced workload durability (up to 180 TB/year), and compatibility with mainstream DVRs/NVRs. Energy-efficient and engineered for low power consumption, it ensures seamless performance in multi-drive systems. Ideal for home or business surveillance demanding uninterrupted, high-quality video retention.