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Silver 3.5 inch SATA hard drive with green label

Western Digital

Western Digital WD64PURZ 6TB 3.5" SATA internal hard drive

SKU CH-N74N-F3Q7Z MPN WD64PURZ

Surveillance-class 6 TB CMR drive with 256 MB cache and 5400 RPM, rated for 180 TB/year workload in 24/7 NVR systems

  • PackagingStandard Packaging
  • InterfaceSATA 6.0Gb/s
  • Capacity6TB
  • Flash Memory Capacity6 TB
  • Recording TechnologyCMR
  • RPM5400 RPM

Options 6TB 5400RPM

Struck-through versions exist but are not stocked here.

  • Designed for 24/7 surveillance workloads up to 180TB per year
  • AllFrame technology reduces frame loss and improves video playback
  • CMR recording with 256MB cache for consistent write performance
  • 5400 RPM SATA 6.0Gb/s interface in standard 3.5 inch form factor
  • 6TB capacity built for NVR compatibility and constant operation

Surveillance storage for 24/7 recording

The WD Purple WD64PURZ is a 6TB 3.5-inch internal hard drive built for continuous operation in network video recorders. It uses CMR recording technology and a SATA 6.0Gb/s interface to sustain the constant write workloads that surveillance systems demand. All Frame technology helps reduce frame loss during multi-stream recording.

Upgrade from desktop drives for always-on duty

Standard desktop drives are rated for intermittent use and can struggle with the vibration and heat of a multi-bay NVR running 24 hours a day. This drive carries a workload rating of up to 180TB per year and is tested for compatibility across a broad range of security platforms. The jump is worth it when footage gaps or drive failures are not an option.

SATA interface caps peak throughput

The SATA 6.0Gb/s link limits maximum sequential transfer rates regardless of the drive's internal cache of 256MB or its 5400 RPM spindle speed. Systems needing higher sustained bandwidth for many concurrent high-resolution streams may hit this interface ceiling. Builds requiring faster random access or a smaller form factor cannot be served by this 3.5-inch SATA design.

Highlights

  • Designed for 24/7 surveillance workloads up to 180TB per year
  • AllFrame technology reduces frame loss and improves video playback
  • CMR recording with 256MB cache for consistent write performance
  • 5400 RPM SATA 6.0Gb/s interface in standard 3.5 inch form factor
  • 6TB capacity built for NVR compatibility and constant operation

Specifications

BrandWestern Digital
ModelWD64PURZ
Part NumberWD64PURZ
PackagingStandard Packaging
InterfaceSATA 6.0Gb/s
Capacity6TB
Flash Memory Capacity6 TB
Recording TechnologyCMR
RPM5400 RPM
Cache256MB
FeaturesCompact
UsageFor Video Surveillance
Form Factor3.5"
Height (maximum)5.79 in x 4.0 in x 1.03 in
Width (maximum)5.79 in x 4.0 in x 1.03 in
Length (maximum)5.79 in x 4.0 in x 1.03 in
Shipping weight0.57 kg
Package size142 × 103 × 27 mm

Other versions of this model

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Questions about this item

What are the exact dimensions of this 3.5-inch drive so I can confirm it fits my NVR bay?

The drive measures 5.79 inches long, 4.0 inches wide and 1.03 inches high, matching the standard 3.5-inch form factor used in most surveillance enclosures.

Which cables and jumpers are required to install the WD64PURZ in a typical NVR?

Connect a standard SATA 6.0Gb/s data cable and a SATA power cable; no jumpers are needed because the drive uses native SATA addressing.

How often should I expect to replace this drive given its 180 TB per year workload rating?

At the rated 180 TB per year, a 6 TB drive running 24/7 in a typical surveillance array will reach its workload limit after roughly three years of continuous recording.

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