Western Digital WD Purple 4TB Surveillance Hard Drive – 3.5" SATA 6 Gb/s, 256MB Cache for NVR & DVR Systems

The Western Digital WD Purple 4TB Surveillance Hard Drive is engineered specifically for 24/7 video surveillance systems, providing reliable storage for network video recorders (NVRs), digital video recorders (DVRs), and professional security installations. Unlike standard desktop hard drives, WD Purple drives are optimized for continuous video recording and playback, helping reduce dropped frames while improving long-term reliability.

Designed for demanding surveillance environments, the WD Purple features AllFrame™ technology, which minimizes video interruptions and improves streaming performance when multiple cameras are recording simultaneously. Supporting workloads up to 180 TB per year, the drive is ideal for both residential and commercial security systems.

With 4TB of storage, the drive provides ample capacity for weeks of continuous recording depending on the number of cameras, recording resolution, and motion recording settings. The SATA III 6 Gb/s interface ensures fast, dependable performance, while the 256MB cache helps improve write efficiency during continuous recording workloads.

The WD Purple is an excellent storage solution for the Ajax NVR 8-Channel and Ajax NVR 16-Channel recorders, as well as other ONVIF-compatible surveillance systems requiring dependable 24/7 storage.

Features

• 4TB surveillance storage capacity
• Designed for 24/7 continuous recording
• Optimized for NVR and DVR systems
• SATA III 6 Gb/s interface
• 3.5-inch internal hard drive
• 256MB cache
• WD AllFrame™ technology
• Supports up to 64 HD cameras
• Up to 180 TB/year workload rating
• CMR recording technology
• Low power consumption
• Reliable operation in surveillance environments
• 3-Year Limited Warranty

Ideal Applications

• Ajax NVR 8-Channel
• Ajax NVR 16-Channel
• Home security systems
• Business surveillance
• Retail stores
• Offices
• Warehouses
• Schools
• Multi-camera CCTV installations