The Western Digital WD Purple WD44PURZ is a 4TB surveillance-grade hard drive engineered specifically for 24/7 operation in demanding security camera systems. Unlike standard desktop drives, this 3.5-inch SATA drive is purpose-built to withstand the constant recording stress, elevated temperatures, and equipment vibrations common in NVR and DVR environments. With its 5400 RPM speed and 256MB cache, it delivers reliable performance optimized for continuous video streaming rather than random access patterns typical of desktop computing.

• AllFrame technology reduces frame loss and improves video playback quality across up to 64 camera streams
• 180TB workload rating ensures durability for always-on surveillance recording
• SATA 6Gb/s interface provides 150MB/s throughput for smooth multi-camera recording
• 1.5 million hours MTBF (Mean Time Between Failures) for exceptional reliability
• Tested compatibility with a wide range of security systems including UniFi Protect NVRs

For UniFi Protect deployments or any professional surveillance system, the WD Purple represents an intelligent storage choice that prioritizes longevity and consistent performance over raw speed. The three-year limited warranty from Western Digital provides peace of mind, while the surveillance-optimized firmware ensures your security footage is reliably captured and stored. Whether you’re building a new NVR or expanding storage capacity in an existing system, this drive delivers the specialized performance characteristics that 24/7 video surveillance demands at an excellent price point.