WD Purple 4TB SATA 6Gb/s Surveillance Hard Drive
The WD Purple 4TB is a 3.5-inch surveillance hard drive engineered for mainstream DVR and NVR systems. Designed for write-intensive, low-bit-rate and high-stream-count workloads, it uses WD AllFrame technology to help improve recording performance and reduce video frame loss in compatible surveillance environments.
The drive uses CMR recording technology and supports surveillance systems with up to 64 HD cameras and up to 16 drive bays. With a 256MB cache and transfer rates of up to 175MB/s, it is designed for continuous surveillance recording and reliable data storage.
Specifications:
| Specification | Details |
|---|---|
| Brand | WD |
| Series | WD Purple |
| Storage Capacity | 4TB |
| Drive Type | Surveillance Hard Disk Drive (HDD) |
| Form Factor | 3.5-inch |
| Interface | SATA 6Gb/s |
| Connector | SATA |
| Transfer Rate | Up to 175MB/s |
| Cache | 256MB |
| Recording Technology | CMR |
| Surveillance Workload | Up to 180TB/year |
| Camera Support | Up to 64 HD cameras |
| Maximum Drive Bays | Up to 16 |
| Firmware Technology | AllFrame |
| RV Sensors | Yes |
| Operating Temperature | 0°C to 65°C |
| Non-Operating Temperature | -40°C to 70°C |
| Dimensions (L × W × H) | 147.07 × 101.6 × 26.16 mm |
| Weight | 570g |
| Model Number | WD43PURZ |
Key Features:
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4TB surveillance storage
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Designed for DVR and NVR systems
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SATA 6Gb/s interface
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Up to 175MB/s transfer rate
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256MB cache
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CMR recording technology
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WD AllFrame technology
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Supports up to 64 HD cameras
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Supports up to 16 drive bays
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Up to 180TB/year workload rating




