WD Purple 4TB Surveillance HDD — SATA 3.5

The Western Digital WD Purple WD44PURZ delivers 4TB of surveillance-optimized storage engineered specifically for the demanding requirements of 24/7 video recording systems. Unlike standard desktop drives, this purpose-built surveillance drive features AllFrame™ technology to reduce frame loss and improve video playback quality, while its robust design withstands the elevated heat fluctuations and equipment vibrations common in NVR and DVR environments. With support for up to 64 cameras and a workload rating of 180TB per year, this drive provides the reliability and endurance essential for UniFi Protect deployments and other professional surveillance systems.

• 5400RPM performance with 256MB cache optimized for continuous video streaming and retrieval
• SATA/600 interface delivering up to 150MB/s throughput for smooth multi-camera recording
• 1.5 million hours MTBF for exceptional long-term reliability in always-on surveillance applications
• 3.5-inch form factor compatible with standard NVR chassis and storage enclosures
• Three-year limited warranty backed by Western Digital’s industry-leading support

Whether you’re building a UniFi Protect system with multiple AI-enabled cameras or deploying a traditional surveillance infrastructure, the WD Purple provides the surveillance-class performance and durability your recording system demands. Its proven compatibility with a wide range of security systems, combined with engineering specifically focused on write-intensive video workloads, makes this an excellent storage foundation for protecting what matters most—ensuring your surveillance footage is captured reliably and available when you need it.