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Silver 3.5 inch bare hard drive with green label

Western Digital

Western Digital WD84PURZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive

SKU CH-5JCZ-20RFE MPN WD84PURZ

An 8 TB surveillance drive with 128 MB cache, 5640 RPM and SATA 6.0 Gb/s, built for up to 16 bays and 180 TB/yr workloads

  • PackagingBare Drive
  • InterfaceSATA 6.0Gb/s
  • Capacity8TB
  • RPM5640 RPM
  • Cache128MB
  • UsageFor Video Surveillance
  • Designed for continuous surveillance recording with AllFrame technology
  • 8TB capacity stores weeks of high-stream footage
  • 128MB cache sustains write-intensive, low-bitrate workloads
  • 180 TB/yr workload rating handles multi-camera environments
  • Supports up to 16 drive bays for scalable arrays

Purpose-built surveillance storage

The WD Purple WD84PURZ is an 8TB 3.5-inch internal hard drive engineered for mainstream video-surveillance systems. Its firmware and AllFrame technology are tuned for write-intensive, low bit-rate, high stream-count workloads typical of continuous recording environments.

Capacity and workload headroom

The drive delivers 8TB of capacity with a 128MB cache and spins at 5640 RPM. It is rated for up to 180 TB per year workload rate and supports installations of up to 16 bays, giving ample headroom for multi-camera arrays before sustained write throughput becomes the limiting factor.

SATA interface practical limits

The SATA 6.0Gb/s interface caps maximum sequential transfer at the bus ceiling, so sustained reads and writes will not exceed that bandwidth. Random I/O performance is constrained by the 5640 RPM rotational speed, making the drive unsuitable for workloads that demand low-latency random access or throughput beyond the SATA link.

Points forts

  • Designed for continuous surveillance recording with AllFrame technology
  • 8TB capacity stores weeks of high-stream footage
  • 128MB cache sustains write-intensive, low-bitrate workloads
  • 180 TB/yr workload rating handles multi-camera environments
  • Supports up to 16 drive bays for scalable arrays

Caractéristiques

BrandWestern Digital
SeriesPurple
ModelWD84PURZ
PackagingBare Drive
InterfaceSATA 6.0Gb/s
Capacity8TB
RPM5640 RPM
Cache128MB
UsageFor Video Surveillance
Form Factor3.5"
Poids d’expédition0.70 kg
Dimensions du colis152 × 103 × 27 mm

Questions sur cet article

Will the 8TB Purple drive work in my older 3.5-inch SATA bay that currently holds a 4TB drive?

The drive uses the standard SATA 6.0Gb/s interface and 3.5-inch form factor, so it fits the same bays and connectors as your existing SATA drives.

How can I verify the AllFrame technology is handling my 16-camera write workload correctly after installation?

Check your NVR's disk health page for sustained write throughput near the 180 TB/yr rating and confirm zero frame-drop events during multi-stream recording.

The listing says bare drive — what exactly ships in the box and what must I source separately?

Only the 3.5-inch drive unit is included; you must supply a SATA data cable, a SATA power cable and mounting screws for installation in your recorder or enclosure.

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