WD Purple Pro 22TB Surveillance HDD SATA 6Gb/s 3.5" WD221PURP
WD Purple Pro 22TB Surveillance Hard Drive – SATA 6Gb/s 3.5" (WD221PURP)
Designed for modern surveillance and AI-driven video platforms, the WD Purple Pro 22TB delivers enterprise-class capacity, endurance and performance for smart video systems operating at scale. Built specifically for AI-enabled NVRs, video analytics servers and deep-learning workloads, it provides reliable 24/7 recording and real-time analysis without compromise.
With OptiNAND™ technology and Western Digital’s exclusive AllFrame™ AI optimisation, this drive handles high camera counts and multiple concurrent AI streams while maintaining smooth playback, reduced frame loss and long-term system stability.
Key Features & Benefits
✅Purpose-built for advanced surveillance, AI analytics and deep learning platforms
✅Massive 22TB capacity using enterprise-grade OptiNAND technology
✅Supports up to 64 HD camera streams plus 32 simultaneous AI streams
✅AllFrame AI technology reduces frame drops and improves video integrity
✅Workload rating up to 550TB/year for continuous 24/7 operation
✅Enterprise reliability with up to 2.5 million hours MTBF
✅Tarnish-resistant components for harsh multi-bay environments
✅Optimised for large NVR systems and high-density storage arrays
✅WDDA drive health monitoring support for proactive maintenance
✅Backed by a 5-year limited manufacturer warranty
Specifications
Model
WD221PURP
Series
WD Purple Pro
Drive Type
Internal HDD
Form Factor
3.5 inch
Capacity
22TB
Interface
SATA III 6Gb/s
Recording Technology
CMR (Conventional Magnetic Recording)
Optimised For
AI recorders, surveillance NVRs, video analytics servers, deep learning systems
Camera Support
Up to 64 single-stream HD cameras
AI Stream Support
Up to 32 concurrent AI streams
Workload Rating
Up to 550TB per year
MTBF
Up to 2.5 million hours
Multi-Bay Support
Yes
AllFrame AI Technology
Yes
WD Device Analytics (WDDA)
Yes (system dependent)
Operating Mode
24/7 continuous operation
Warranty
5 years limited