WD Purple Pro hard drive for surveillance is engineered with advanced capabilities High performance, reliability and workload capability for advanced AI-enabled recorders, video analytics appliances, deep-learning servers and cloud-based storage, including RAID and JBOD configurations. Supports up to 550 TB/yr workload rate3 in 8TB -22TB1. Designed with tarnish-resistant components for harsh environments, and with additional robustness for multi-bay enclosures