Western Digital WD Purple 4TB 3.5" Internal Surveillance Hard Drive – SATA/600, 5400RPM, AllFrame™, 24/7, 64 Cameras, 3-Year Warranty

Your NVR's been dropping frames at 2am. The drive you slotted in was never meant to run 24/7 under heat and vibration. That's why it's failing.

The WD Purple 4TB is built for exactly this job. AllFrame™ technology cuts frame loss on HD playback, even with up to 64 cameras writing at once. 180TB annual workload rating. 5400RPM with a 256MB buffer over SATA/600 (6Gb/s). 150MB/s sustained transfer. 1.5 million hour MTBF.

It's surveillance-class storage, tested for compatibility across a wide range of security systems. Backed by a 3-year limited warranty from Western Digital.

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• AllFrame™ technology reduces frame loss and keeps HD video playback smooth under heavy write loads
• Rated for 24/7 operation with up to 64 simultaneous cameras and a 180TB annual workload
• 5400RPM, 256MB buffer, SATA/600 (6Gb/s) interface, 150MB/s sustained transfer rate
• Engineered to handle heat fluctuations and vibration inside NVR and DVR enclosures
• 1.5 million hour MTBF with a 3-year limited warranty from Western Digital