Description
Upgrade your security storage with the WD Western Digital Purple 12TB Surveillance Class Hard Drive (WD121-PURA). Engineered specifically for the extreme demands of high-temperature, always-on 24/7/365 surveillance environments, this 3.5-inch internal hard drive delivers reliable, high-definition video playback when you need it most. Unlike standard desktop drives, the WD Purple series is optimized to withstand constant write cycles, equipment vibrations, and high thermal fluctuations common in multi-bay NVR and DVR security systems.
Key Features & Technology
- Massive 12TB Storage Capacity: Perfectly sized to store weeks or months of ultra-high-definition 4K surveillance footage without needing to constantly overwrite historical data.
- Exclusive AllFrame™ AI Technology: Equipped with advanced firmware optimizations that improve ATA streaming, significantly reducing frame loss, pixelation, and video dropouts while boosting overall playback quality.
- Expanded Camera Support (Up to 64 HD Cameras): Optimized to support up to 64 single-stream HD security cameras, alongside an additional 32 streams for advanced deep learning and smart AI analytics.
- Built for 24/7 Security Environments: Designed to replace failure-prone desktop drives, boasting an enhanced workload rating of up to 360TB per year and up to 1.5 million hours MTBF.
- HelioSeal® & IntelliSeek™ Technology: Utilizes field-proven helium-sealed technology for high storage density and efficiency. Complemented by IntelliSeek to calculate optimum seek speeds, minimizing power consumption, noise, and system vibration.
- Network Video Recorders (NVR) featuring advanced smart video and AI analytics
- Digital Video Recorders (DVR) for mainstream business and home security systems
- Large multi-bay surveillance arrays requiring continuous raw video capture
- High-density configurations utilizing chipsets from leading security manufacturers
Technical Specifications
| Specification Field | Details |
|---|---|
| Brand | Western Digital (WD) |
| Series / Family | WD Purple Surveillance Series |
| Model Number | WD121-PURA / WD121PURZ |
| Capacity | 12 TB |
| Form Factor | 3.5-inch Internal HDD |
| Interface | SATA III 6 Gb/s |
| Spindle Speed | 7200 RPM |
| Cache Buffer | 256 MB |
| Max Sustained Transfer Rate | Up to 245 MB/s |
| Supported Cameras | Up to 64 HD Surveillance Cameras |
| Workload Rating | Up to 360 TB/year |
| Drive Bays Supported | Unlimited (Includes Tarnish-Resistant Components) |
| MTBF / Load-Unload Cycles | 1.5 Million Hours / 600,000 Cycles |
| Operating Temperature | 0°C to 65°C |
| Dimensions (H x L x W) | 26.1 mm x 147 mm x 101.6 mm |
Ideal Applications
The WD Purple 12TB drive is universally compatible and highly recommended for: