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Silver 3.5 inch internal hard drive with purple label

Western Digital

Western Digital Purple WD85PURZ 8TB 7200 RPM 256MB SATA 3.5" surveillance internal hard drive

SKU CH-8FQF-AS699

Built for 24/7 surveillance recording, this 8TB 3.5" drive handles 85 streams with a 256MB cache and 7200 RPM speed over SATA 6.0Gb/s

  • InterfaceSATA 6.0Gb/s
  • Capacity8TB
  • RPM7200 RPM
  • Form Factor3.5"
  • Built for 24/7 surveillance recording with 8TB capacity
  • Handles elevated heat and vibration in NVR environments
  • 7200 RPM spindle speed for sustained write performance
  • 256MB cache buffers high-definition video streams
  • SATA 6.0Gb/s interface fits standard 3.5" drive bays

Built for 24/7 surveillance recording

This 8 TB 3.5" SATA hard drive is engineered for continuous video capture in network video recorders. It handles the constant write workload and elevated heat fluctuations that desktop drives are not designed to sustain. The 7200 RPM spindle and 256 MB cache keep multiple high-definition streams flowing without frame loss. Install it in any standard 3.5" bay with a SATA 6.0 Gb/s connection.

Workload-optimised firmware and vibration tolerance

The Purple firmware prioritises sequential video writes over random access, reducing pauses during multi-camera recording. Rotational vibration sensors compensate for the mechanical interference common in multi-bay NVR chassis. These firmware and mechanical adjustments let the drive operate reliably in the always-on environment where a standard desktop drive would wear out quickly. No extra software or drivers are required beyond the host system SATA support.

Eight terabytes of continuous recording headroom

At 8 TB the drive stores weeks of footage from several 1080p or 4K cameras before overwriting begins. The 7200 RPM speed and 256 MB buffer absorb burst traffic when multiple motion events trigger simultaneously. Sustained throughput is limited by the SATA 6.0 Gb/s interface and the mechanical media, so arrays demanding higher aggregate bandwidth will need additional drives. It is not suited for primary OS boot or low-latency random-access workloads.

Βασικά χαρακτηριστικά

  • Built for 24/7 surveillance recording with 8TB capacity
  • Handles elevated heat and vibration in NVR environments
  • 7200 RPM spindle speed for sustained write performance
  • 256MB cache buffers high-definition video streams
  • SATA 6.0Gb/s interface fits standard 3.5" drive bays

Προδιαγραφές

BrandWestern Digital
Part NumberWD85PURZ
InterfaceSATA 6.0Gb/s
Capacity8TB
RPM7200 RPM
Form Factor3.5"

Ερωτήσεις για αυτό το προϊόν

Will the 256 MB cache need replacement?

The 256 MB cache is integrated into the drive electronics and has no separate replacement schedule.

What limit appears first during continuous 24/7 recording at 7200 RPM?

Sustained write throughput of the SATA 6.0 Gb/s interface typically becomes the bottleneck before the drive mechanics.

How much heat and noise does the 3.5 inch 7200 RPM drive produce in an always-on NVR?

It is engineered for 24x7 operation with elevated heat fluctuations and vibration tolerance in NVR environments.

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