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WD Purple Surveillance Hard Drive - 8TB

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Model Number: WD85PURZ
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5640 RPM 8TB Smart Video Surveillance 3-Year Limited Warranty
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WD Purple helps deliver consistent recording performance for security systems that run around the clock. It’s an ideal fit for home and small business surveillance environments where reliable footage retention matters.

Key Features
  • Engineered for always-on security environments, helping support continuous recording in DVR and NVR systems that operate around the clock.
  • Reliability rated up to 1M hours MTBF3 and backed by a 3-year limited warranty5.
  • Supports up to 64 single-stream4 HD cameras and engineered for mainstream surveillance systems.
  • Supports up to 180TB/year workload rate2 - up to three times that of desktop drives.
  • WD AllFrame™ technology delivers optimizations and helps reduce frame loss and improve overall video playback.
Key Features
Specifications Data Sheet Support
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Features

Built for 24/7 surveillance — reliable hard drives optimized for mainstream systems.

WD Purple Feature 1

Optimized for Surveillance with AllFrame™​

All WD Purple drives are equipped with AllFrame™ technology, which helps reduce video frame drops and improves video recording and playback.

Designed for Continuous Operation

WD Purple hard drives are designed to handle the rigorous demands of high intensity 24x7 always-on environments of high-definition surveillance systems.
WD Purple Feature 2
WD Purple Feature 3

Tested for Dependable Compatibility​

With a wide range of industry-leading enclosures and chipsets supported, WD Purple hard drives are built with compatibility in mind.​

Enhanced Reliability​

WD Purple drives feature a workload rating of up to 180TB/year2 - up to three times that of desktop drives - to handle the unique demands of mainstream video surveillance DVR and NVR systems.
WD Purple Feature 4
WD Purple Feature 5

Designed for Surveillance Solutions

With an MTBF of up to 1 million hours3, WD Purple drives are engineered for mainstream surveillance DVRs and NVRs that operate 24/7.

Backed by World-Class Support and Warranty

As an industry-leading hard drive manufacturer, Western Digital stands behind their surveillance storage solutions with a 3-year limited warranty.5
WD Purple Feature 6

Specifications

Capacity
8TB
Technologies
AllFrame AI, WDDA
Model Number
WD85PURZ
Recording Technology
CMR
Interface
SATA
Connector
SATA
Form Factor
3.5-Inch
Transfer Rate
up to 215MB/s
Disk Speed
5640 RPM
Cache Size
256MB
Endurance
180TB/year
Warranty
3-Year Limited Warranty
Operating Temperature
0°C to 65°C
Non Operating Temperature
-40°C to 70°C
Dimensions (L x W x H)
5.79" x 4" x 1.03"
Weight
720gms
Certifications
BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV, UL
Use Cases
Smart Video Surveillance
Compatibility
  • Up to 64 HD cameras
  • Up to 16 drive bays
  • AllFrame firmware technology
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Additional Models

1TB, 64MB WD11PURZ
2TB, 256MB WD22PURZ
2TB, 64MB WD23PURZ
3TB, 256MB WD33PURZ
3TB, 128MB WD34PURZ
4TB, 256MB WD43PURZ
4TB, 128MB WD44PURZ
6TB, 64MB WD60PURZ
6TB, 128MB WD62PURZ
6TB, 256MB WD64PURZ
8TB, 256MB WD85PURZ
12TB, 256MB WD121PURZ

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Frequently Asked Questions

A WD Purple surveillance hard drive is a storage drive designed specifically for 24/7 security systems. It’s built to support continuous video recording in DVR and NVR environments, helping deliver reliable performance for surveillance workloads and footage retention.

Corporate Responsibility at WD

We commit to positive corporate citizenship in all aspects of our business.

Learn More

Disclosures

  1. 1MB = 1 million bytes, 1GB = 1 billion bytes, 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.​
  2. Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred × (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations.​
  3. MTBF specifications are based on a sample population and are estimated by statistical measurements and acceleration algorithms under typical operating conditions (workload of 220TB/year, drive temperature of 40°C). Derating of MTBF will occur above these parameters, up to 550TB/year and 60°C (device-reported temperature). MTBF does not predict an individual drive's reliability and does not constitute a warranty.​
  4. Single stream at 3.2Mbps (1080p, H.265, 25 fps) for WD22PURZ, WD33PURZ, WD42PURZ, WD43PURZ, WD60PURZ, WD62PURZ, WD63PURZ, WD64PURZ, WD84PURZ and 2.6Mbps (720p, H.265, 25 fps) for WD10PURZ, WD20PURZ, WD30PURZ, WD40PURZ. Results may vary depending on camera resolution, file format, frames per second, software, system settings, video quality, and other factors.
  5. See https://www.westerndigital.com/support/store/warranty-policy for region-specific warranty details.
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