Internal HDD Western Digital Purple WD34PURZ 3 TB 3.5 inch 5400 RPM 128 MB Serial ATA III

Western Digital Purple WD34PURZ is a 3 TB internal 3.5" hard drive designed for continuous surveillance recording in DVR and NVR systems. Engineered for always-on operation, it offers a 5400 RPM spindle speed, 128 MB buffer and SATA III interface to support sustained write workloads and multiple video streams. The drive is tested for compatibility with a wide range of security systems and includes technologies to reduce frame loss and improve video playback.

Advantages

The drive is optimized for 24/7 surveillance environments with components and firmware tuned to resist heat fluctuations and vibration common in NVR enclosures. It features AllFrame™ technology to reduce dropped video frames and improve overall playback quality. Designed for sustained workloads, the drive supports high annual write ratings and is compatible with multi-bay systems and many industry enclosures and chipsets. A limited three-year warranty is provided.

Suitable for

• DVR systems for CCTV recording
• NVR setups for IP-camera recording
• Small to medium multi-camera surveillance installations
• Expanding storage capacity in security appliance enclosures

Key specifications

• Capacity: 3 TB
• Form factor: 3.5"
• Interface: SATA III
• Rotational speed: 5400 RPM
• Cache (buffer): 128 MB
• Optimized workload rating for surveillance (up to enterprise-class annual TBW for camera streams)
• Designed for continuous 24/7 operation with high MTBF
• Weight: approximately 0.57 kg

How to use

Install the WD Purple 3 TB drive into a compatible 3.5" bay of your DVR, NVR or storage enclosure following the appliance manufacturer's installation instructions. Connect the SATA power and data cables to the drive and initialize it via the recorder's storage management interface or your system BIOS/OS. Configure recording settings and camera streams in your recorder software to ensure proper allocation of write bandwidth and storage retention.

Recommendations

For reliable surveillance recording, use this WD Purple drive in systems designed for continuous operation, ensure adequate cooling in multi-bay enclosures, and verify compatibility with your DVR/NVR firmware. Regularly monitor drive health via the recorder's diagnostics and maintain backups for critical footage.