The Western Digital WD Purple 4TB Surveillance Hard Drive is engineered specifically for 24/7, always-on video surveillance systems. Designed to operate in demanding environments such as DVRs and NVRs, this 3.5-inch internal HDD uses a SATA 6Gb/s interface to deliver reliable storage performance with a spindle speed of 5400 RPM and a 256MB cache.

WD Purple drives incorporate WD’s AllFrame™ technology, which minimizes video frame loss and enhances overall video playback quality, making them ideal for multi-camera security setups. This drive supports intensive workload ratings—up to 180 TB per year—and is optimized for systems with multiple HD cameras, supporting up to 64 single-stream HD cameras depending on the model.

Built to withstand elevated heat and vibration typical in surveillance systems, WD Purple is tested for wide compatibility with various DVR/NVR configurations and chipsets. Backed by a 3-year limited warranty, it ensures durability and reliable performance in continuous surveillance operations.

Key Benefits:

• Tailored for high-definition video surveillance applications


• Supports multi-camera streaming with improved stability


• Advanced firmware minimizes frame loss for smoother playback


• High workload capability ideal for 24/7 surveillance


• Tested compatibility across a broad range of security systems


• Trusted brand with industry-leading warranty and support