Western Digital WD Purple 4TB 3.5-inch SATA Surveillance Hard Drive

The Western Digital WD Purple 4TB Surveillance Hard Drive is a 3.5-inch SATA HDD engineered for continuous, always-on mainstream video surveillance systems. The WD44PURZ uses CMR recording technology and WD AllFrame technology to support the write-intensive, high-stream-count workloads typical of DVR and NVR applications.

With a 4 TB capacity, 128 MB cache, an annualized workload rating of up to 180 TB/year, RV sensors and support for surveillance systems with up to 16 drive bays, the WD Purple WD44PURZ is designed for scalable security recording deployments.

Key Features

• 4 TB Surveillance Storage: Designed for continuous mainstream DVR and NVR video recording applications.
• WD AllFrame Technology: Helps reduce video frame drops and improve video recording and playback.
• 180 TB/year Workload Rating: Built to handle the workload demands of mainstream video surveillance systems.
• Multi-Camera Support: Supports up to 64 single-stream HD cameras under Western Digital's stated operating conditions.
• Multi-Bay Design: Supports surveillance storage systems with up to 16 drive bays and includes rotational vibration sensors.

Technical Specifications

Compatibility & Important Information

WD44PURZ is designed for mainstream surveillance DVR and NVR applications using a 3.5-inch SATA drive. This 4 TB configuration supports surveillance storage systems with up to 16 drive bays and includes rotational vibration sensors.

Western Digital specifies support for up to 64 single-stream HD cameras at 3.2 Mbps, 1080p, H.265 and 25 fps. Actual results can vary with camera resolution, file format, frame rate, software, system settings, video quality and other system factors. Western Digital provides a Surveillance Compatibility Selector for recorder-specific compatibility checking.