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Standard 3.5 inch internal hard drive with silver metal casing and green label

Western Digital

Western Digital WD85PURZ 8TB 3.5" 5400 RPM 256MB SATA 6.0Gb/s internal hard drive

SKU CH-M1QX-S17AD MPN WD85PURZ

Surveillance-optimised 8 TB 3.5" hard drive with 5400 RPM, 256 MB cache and SATA 6.0 Gb/s interface

  • PackagingStandard Packaging
  • InterfaceSATA 6.0Gb/s
  • Capacity8TB
  • Flash Memory Capacity8 TB
  • RPM5400 RPM
  • Cache256MB

Options 8TB 5400RPM

Struck-through versions exist but are not stocked here.

  • Engineered for surveillance workloads with WD AllFrame technology
  • 8TB capacity stores weeks of high-resolution footage
  • 180 TB/yr workload rating handles continuous recording
  • Supports up to 16 drive bays for scalable arrays
  • Tarnish-resistant components built for 24/7 operation

8 TB surveillance storage

The WD Purple WD85PURZ is a 3.5 inch desktop hard drive built for mainstream surveillance systems. It offers 8 TB of capacity on a SATA 6.0 Gb/s interface and spins at 5400 RPM with a 256 MB cache. The drive is designed for continuous operation in multi-bay enclosures.

180 TB yearly workload and 16-bay support

The 8 TB capacity handles weeks of high-resolution footage from multiple cameras before overwriting begins. Its 180 TB per year workload rating and support for up to 16 bays provide headroom for larger deployments. Sustained write streams may reach the limits of the 5400 RPM mechanism under peak multi-camera loads.

WD AllFrame technology and tarnish-resistant parts

WD AllFrame technology optimises the drive firmware for write-intensive, low bit-rate, high stream-count surveillance workloads. Tarnish-resistant components improve durability in challenging environments. Standard packaging is included; no additional software or mounting hardware is bundled.

Highlights

  • Engineered for surveillance workloads with WD AllFrame technology
  • 8TB capacity stores weeks of high-resolution footage
  • 180 TB/yr workload rating handles continuous recording
  • Supports up to 16 drive bays for scalable arrays
  • Tarnish-resistant components built for 24/7 operation

Specifications

BrandWD
SeriesPurple
ModelWD85PURZ
Part Number718037889245
PackagingStandard Packaging
InterfaceSATA 6.0Gb/s
Capacity8TB
Flash Memory Capacity8 TB
RPM5400 RPM
Cache256MB
FeaturesIndustry-Leading Storage. Surveillance You Can Trust.
Western Digital's Exclusive WD AllFrame® Technology
Enhanced Workload Ratings
Multiple Cameras, Multiple Streams
Designed for Reliable Operation
Wide Compatibility. Seamless Integration.
Three-Year Limited Warranty
Form Factor3.5"
Height (maximum)1.03in
Width (maximum)4.00in
Length (maximum)5.79in
Shipping weight0.68 kg
Package size152 × 102 × 38 mm

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Questions about this item

Will the WD85PURZ 8TB SATA 6.0Gb/s drive work in my older DVR that only has SATA 3.0Gb/s ports?

The drive uses the SATA 6.0Gb/s interface and is backward compatible with SATA 3.0Gb/s and SATA 1.5Gb/s controllers, so it will operate at the slower link speed without any configuration changes.

How can I verify the WD85PURZ is running correctly after installing it in my NVR?

Check the NVR drive health page for SMART attributes such as reallocated sector count and seek error rate, confirm the 8TB capacity is recognised, and monitor that the workload stays within the 180 TB/yr rating.

What comes in the box with the WD85PURZ and what extra parts do I need to buy?

The drive ships in standard packaging with the 3.5 inch 8TB hard drive only; you must supply your own SATA data cable, SATA power cable, and mounting screws for your enclosure.

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