The Western Digital WD Purple Pro 22TB Surveillance Hard Drive (WD221PURP) is designed specifically for advanced, always-on video surveillance systems and AI-enabled analytics solutions. This 3.5-inch SATA III (6 Gb/s) HDD offers massive 22TB capacity with 7200 RPM rotational speed, delivering sustained data transfer rates up to 265 MB/s to ensure seamless continuous video recording. Engineered with Western Digital’s exclusive AllFrame AI technology, it reduces frame loss and video interruptions, enhancing support for up to 64 HD cameras and up to 32 concurrent AI deep-learning streams in compatible NVR/DVR systems. Featuring a 512MB cache and enterprise-class workload rating of up to 550 TB/year, the WD Purple Pro drive is built for high-write, mission-critical, 24x7 surveillance environments requiring reliability and extended durability. It also boasts a 2.5 million hour MTBF rating and a robust 5-year limited warranty. Designed with tarnish-resistant components for multi-bay enclosure compatibility, this HDD supports RAID and JBOD configurations and integrates with Western Digital Device Analytics for proactive monitoring and health management.