WD Purple WD44PURZ 4TB Surveillance Internal Hard Drive
Western Digital
WD Purple WD44PURZ 4TB Surveillance Internal Hard Drive
The WD Purple WD44PURZ is a surveillance-class hard drive engineered for 24/7 recording in DVR and NVR systems. It handles the heat, vibration, and sustained workload of multi-camera installations where a standard desktop drive would fail. AllFrame technology reduces video frame loss, and it supports up to 64 HD cameras.
Why this product
Built for 24/7 surveillance, not desktop use
Engineered to withstand constant operation, heat fluctuations, and equipment vibrations in security system environments. A standard drive is designed for occasional use; this one runs all day every day.
AllFrame technology reduces frame loss
Exclusive firmware reduces dropped video frames during recording and playback, keeping your surveillance feed continuous and reliable.
180 TB/year workload rating
Rated for three times the workload of a desktop drive, handling write-intensive, multi-stream recording typical of modern surveillance systems.
Supports up to 64 HD cameras
Flexible enough to handle single-stream recording from 64 cameras, giving you room to expand your security deployment without replacing the drive.
3-year limited warranty
Backed by a 3-year limited warranty reflecting the drive's design for continuous operation.
- Capacity4TB
- Form factor3.5-inch
- InterfaceSATA 6 Gb/s
- Sequential readUp to 175 MB/s
- Speed5400 RPM
- Camera supportUp to 64 HD cameras
- Workload rating180 TB/year
- Warranty3-year limited warranty
- SKUWDP-1733
- EAN718037905778
- DVR and NVR systems: tested and certified for compatibility across a wide range of surveillance recorders.
- Systems supporting 8 or more drive bays: rated for multi-bay enclosures up to 16 bays.
- SATA 6 Gb/s interfaces: standard connection on all modern surveillance recorders.
- Desktop computers or general-purpose storage: not designed for intermittent-use environments; use a standard hard drive instead.
- High-speed read-intensive workloads: optimized for write-heavy surveillance recording, not for applications requiring fast random access.
Best for
- Multi-camera surveillance systems recording continuously
- Installations with eight or more cameras where frame loss must be minimized
- Long-term video archival in DVR/NVR environments
- Vibration-prone locations such as vehicles or high-traffic facilities
Trade-offs
- Personal computers or laptops: designed exclusively for surveillance duty; unsuitable for general computing.
- High-speed gaming or content creation: 5400 RPM and 175 MB/s throughput are slower than desktop drives optimized for interactive workloads.
- Frequently accessed cold storage: built for continuous sequential writes, not repeated small random reads.
- Systems requiring NVMe performance: SATA interface limits throughput; NVMe drives are necessary for much higher speeds.
WD Purple drives are designed to meet the challenges of 24x7 video surveillance recording. These drives are engineered specifically for surveillance to help withstand the elevated heat fluctuations and equipment vibrations within NVR environments. An average desktop drive is built to run for only short intervals, not the harsh 24/7 always-on environment of a high-definition surveillance system. With WD Purple drives, you get reliable, surveillance-class storage that's tested for compatibility in a wide range of security systems. Exclusive AllFrame™ technology helps reduce frame loss and improve overall video playback.
Western Digital's Exclusive AllFrame™ Technology — All WD Purple drives are equipped with AllFrame™ technology, which helps reduce video frame drops and improves video recording and playback.
Enhanced Workload Ratings — WD Purple drives feature a workload rating of up to 180TB/year — up to three times that of desktop drives — to handle the unique demands of mainstream video surveillance DVR and NVR systems.
Multiple Cameras, Multiple Streams — Modern recorders now support multiple video streams per camera. WD Purple drives support up to 64 single-stream HD cameras. With so many options, you have the flexibility to upgrade or expand your security applications in the future.
Designed for Surveillance Solutions — With an MTBF of up to 1 million hours, WD Purple drives are engineered for mainstream surveillance DVRs and NVRs that operate 24/7.
WD Purple delivers smart video storage that you can trust and are backed by a 3-year limited warranty.
Drive
| Brand | WD |
|---|---|
| Model number | WD44PURZ |
| Capacity | 4TB |
| Form factor | 3.5-inch |
| Interface | SATA 6 Gb/s |
| Recording technology | CMR |
Performance
| Rotational speed | 5400 RPM |
|---|---|
| Sequential read | Up to 175 MB/s |
| Cache | 128MB |
| Camera support | Up to 64 HD cameras |
| Maximum drive bays supported | 16 |
| Workload rating | 180 TB/year |
Power & environment
| Load/Unload cycles | 300,000 |
|---|
Reliability
| MTBF | 1 million hours |
|---|---|
| Non-recoverable read errors | <1 in 10¹⁴ bits read |
| Firmware feature | AllFrame |
| Warranty | 3-year limited warranty |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.