WD Purple Pro 18TB Surveillance HDD — 7200RPM 272MB/s

The Western Digital WD Purple Pro 18TB surveillance hard drive is purpose-built for demanding 24/7 security systems, making it an ideal storage solution for UniFi Protect installations and other professional NVR deployments. Engineered with AllFrame™ technology, this drive optimizes ATA streaming to minimize errors, pixelation, and video interruptions that can compromise surveillance footage. With support for up to 64 cameras and a robust 550TB workload rating, this drive delivers the reliability and endurance required for always-on security systems in small businesses, commercial facilities, and large residential deployments.

• 18TB capacity provides extensive storage for weeks or months of high-resolution video footage from multiple cameras
• 7200RPM spindle speed and 272MB/s transfer rate ensure smooth recording and playback performance even with numerous concurrent video streams
• 512MB cache buffer optimizes data flow for consistent write performance in multi-camera environments
• 2.5 million hours MTBF and 5-year warranty demonstrate enterprise-grade reliability for mission-critical surveillance applications
• 24×7 operational rating ensures the drive can handle continuous recording without performance degradation

Unlike standard desktop drives, the WD Purple Pro is specifically optimized for the unique demands of surveillance workloads, where consistent write performance and thermal management are critical. This drive pairs perfectly with UniFi Protect systems running on UNVR, UNVR-Pro, or other NVR platforms, providing the dependable storage foundation your security infrastructure requires. Whether you’re expanding an existing surveillance system or building a new multi-camera deployment, this drive offers the capacity, performance, and longevity to protect your investment while ensuring critical footage is always captured reliably.