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Silver 3.5 inch internal hard drive with circuit board visible underneath

Western Digital

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

SKU CH-5JSY-1AFDR MPN WD63PURZ

Surveillance-grade 6 TB CMR drive rated for 180 TB/yr workloads and up to 16 bays with AllFrame technology

  • Total capacity6 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Recording methodCMR
  • Rotational speed5,400 RPM
  • Cache memory256 MB
  • Optimised for video-surveillance workloads with AllFrame technology
  • Sustains up to 180 TB per year write workload
  • CMR recording ensures consistent streaming performance
  • 256 MB cache smooths multi-camera data ingestion
  • 5-inch form factor fits standard surveillance bays

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.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $125.99
Pricier than about 54% of the 4,938 comparable items (median $107.99).
Total capacity 6 TB
Higher than about 75% of the 2,372 comparable items (median 2 TB).
Price per TB $21.00 per TB
Cheaper than about 92% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWD
Product linePurple
Model nameWD63PURZ
Total capacity6 TB
Recommended useFor Video Surveillance
Performance
Rotational speed5,400 RPM
Storage
Recording methodCMR
Cache memory256 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Maximum width101.6 mm
Maximum length147 mm
Shipping weight0.54 kg
Package size203 × 152 × 32 mm

Questions about this item

How do I install the WD63PURZ in a standard 3.5" drive bay and what step is often missed?

Mount the drive using four screws in a 3.5" bay, connect the SATA data and power cables, then enable AHCI mode in the system BIOS so the 6.0Gb/s interface negotiates correctly.

What maintenance does the WD63PURZ require over its service life in a surveillance array?

No scheduled mechanical maintenance is needed; monitor SMART attributes and ensure the 180 TB/yr workload rating is not exceeded, replacing the drive if reallocated sectors appear.

What limit appears first when the WD63PURZ runs continuous 24/7 recording?

The 180 TB per year workload rating is the first constraint; sustained writes beyond that level can reduce reliability before the 5400 RPM mechanical wear becomes a factor.

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