Western Digital WD63PURZ Purple 6TB 5400 RPM 256MB SATA 3.5" internal hard drive

6 TB SATA surveillance drive

The WD Purple WD63PURZ is a 3.5-inch internal hard drive built for mainstream video surveillance systems. It offers 6 TB of capacity using CMR recording technology and a 256 MB cache to handle continuous write workloads. The drive connects via a SATA 6.0 Gb/s interface and spins at 5400 RPM. It is intended for installers and system integrators who need reliable storage for multiple camera streams.

Thermals noise and power

Designed for always-on operation, the drive supports an annual workload rate of up to 180 TB per year. Tarnish-resistant components help maintain consistent performance in the warm, enclosed environments typical of network video recorders. The 5400 RPM spindle speed contributes to lower acoustic output and reduced power draw compared to faster desktop drives. These characteristics suit deployments where drives run continuously in multi-bay enclosures.

Build and mounting

The drive fits standard 3.5-inch bays with maximum dimensions of 147.00 mm length, 101.60 mm width and 26.10 mm height. It supports installations of up to 16 bays, allowing use in larger recorder chassis. The SATA data and power connectors are positioned for straightforward cabling in rack-mounted or desktop NVR units. Retail or OEM packing may vary, but the mechanical mounting points follow the industry standard pattern.