Western Digital Purple Surveillance Hard Drive 12TB

Western Digital WD Purple Pro 12TB 7200 RPM Surveillance Hard Drive
The WD Purple Pro WD121PURP is a professional-grade 12TB surveillance hard drive engineered for demanding 24/7 video surveillance systems, advanced network video recorders (NVRs), AI-enabled recorders, and video analytics applications.
Featuring a 7200 RPM spindle speed, 256MB cache, CMR recording technology, and a SATA 6 Gb/s interface, the WD Purple Pro provides reliable high-capacity storage for continuous surveillance recording. WD's AllFrame AI technology helps manage multiple video, picture, and metadata streams while reducing dropped frames.
Designed for demanding surveillance environments, the WD Purple Pro supports up to 64 single-stream HD cameras and up to 32 concurrent AI streams. With a workload rating of up to 550TB per year and a 5-year limited warranty, it is an excellent storage solution for professional NVR and video analytics systems.
Key Features
12TB High-Capacity Surveillance Hard Drive
WD Purple Pro Series
7200 RPM Performance
256MB Cache
3.5-inch Internal Hard Drive
SATA 6 Gb/s Interface
CMR Recording Technology
Designed for 24/7 Surveillance Operation
AllFrame AI Technology
Supports up to 64 Single-Stream HD Cameras
Supports up to 32 Concurrent AI Streams
Up to 550TB/year Workload Rating
Designed for AI-Enabled Recorders and Video Analytics
Suitable for RAID and JBOD Storage Systems
Tarnish-Resistant Components
5-Year Limited Warranty
Specifications
Model
WD121PURP
Series
WD Purple Pro
Capacity
12TB
Form Factor
3.5-inch
Interface
SATA 6 Gb/s
Recording Technology
CMR
Spindle Speed
7200 RPM
Cache
256MB
Transfer Rate
Up to 245 MB/s
Workload Rating
Up to 550TB/year
Camera Support
Up to 64 single-stream HD cameras
AI Streams
Up to 32 concurrent AI streams
Technologies
AllFrame AI, OptiNAND, WDDA
Dimensions
147 × 101.6 × 26.1 mm
Weight
660g
Operating Temperature
0°C to 65°C
Warranty
5-Year Limited Warranty
Ideal Applications
Professional NVR systems
24/7 security camera recording
AI-enabled surveillance systems
Video analytics servers
Deep-learning video systems
Commercial security installations
Retail and warehouse surveillance
Industrial security systems
RAID and JBOD storage environments
Important Model Information
The WD121PURP is the 12TB WD Purple Pro model with a 256MB cache. Western Digital also offers the WD122PURP, a 12TB Purple Pro model with a 512MB cache. Please verify the model number before ordering.
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