Overview

  • Industry-Leading Storage, Surveillance You Can Trust
    Western Digital has provided surveillance-grade storage for more than a decade. With WD Purple surveillance storage, drives are engineered for high temperature, always-on surveillance systems so you can rely on quality video when you need it most. WD Purple delivers smart video storage that you can trust and are backed by a 3-year limited warranty.
  • Western Digital’s Exclusive AllFrame Technology
    All WD Purple drives are equipped with AllFrame technology, which helps reduce video frame drops and improves video recording and playback.
  • Enhanced Workload Ratings
    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.
  • Multiple Cameras, Multiple Streams
    Modern recorders now support multiple video streams per camera. WD Purple drives support up to 64 single-stream HD cameras3. With so many options, you have the flexibility to upgrade or expand your security applications in the future.
  • Designed For Surveillance Solutions
    With an MTBF of up to 1 million hours, WD Purple drives are engineered for mainstream surveillance DVRs and NVRs that operate 24/7. With tarnish-resistant components5 and support in storage systems with more than eight drive bays6, WD Purple drives deliver reliable operation even in harsh environments.
  • Wide Compatibility, Seamless Integration
    WD Purple hard drives are built with compatibility in mind, so you can quickly and seamlessly add capacity to your surveillance system. With a wide range of industry-leading enclosures and chipsets supported, you’re sure to find the DVR or NVR configuration that’s right for you.

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Specifications

Capacity & configuration

Storage Capacity
8000GB, 4000GB
Storage Drive Type
HDD
Lighting Type
None

Dimensions & weight

Product Name
Purple 8TB Surveillance Internal Hard Drive
Product Compatibility
Server
Product Height
1.03 inches
Product Width
4 inches
Product Weight
1.58 ounces

Features

Brand
WD
Rotational Speed
5400 revolutions per minute
Maximum Read Speed
215 megabytes per second
Maximum Write Speed
215 megabytes per second
Heatsink
No
Internal Or External
Internal
Form Factor
3.5 in.
Interface(s)
SATA
Data Encryption
No
Usage
Surveillance
Cache Buffer Size
256 megabytes
Minimum System Requirements
Supports 64 single-stream HD cameras
UPC
718037889245, 718037905778

Power & warranty

Model Number
WD85PURZ
Warranty - Parts
3 years
Warranty - Labor
3 years

Warranty & protection

Included manufacturer warranty

See manufacturer documentation.

Register your product with the manufacturer within 30 days of delivery.

Warranty service

Manufacturer warranty claims are handled by the manufacturer. We are happy to help you find the right contact: (888) 419-6820.

Customer reviews

Write a review
CarolynHOct 26, 2026 · Verified purchase ★★★★★

Security Cameras - My security cameras now have over 30 days of memory with this hard drive.

VoidDilationSep 12, 2026 · Verified purchase ★★★☆☆

Failed after a year of use, has 3 year warranty. - Failed after a 1 year and 1 month of use. I had to pay the shipping to return it to WD for replacement; let's see if WD's warranty will send a new one or fixed/refurbished/renewed one.

DenoJul 19, 2026 · Verified purchase ★★★★★

Works as expected - I needed a 16TB space for my NVR. WD Purple is a tried-and-true drive. Best Buy had it in stock, and the price was better than Amazon's.

PurchasingAgentJul 6, 2026 · Verified purchase ★★★★★

Gets the job done. I would purchase again if needed.

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Questions & answers

Ask a question

Email [email protected] or call (888) 419-6820 during business hours.

Free U.S. shippingOn every order. Leaves our store in 1–2 business days, arrives in 3–5 business days.
Free returns for 30 daysNo restocking fee. We email you a prepaid return label.
We can install it tooOptional in-home delivery, installation and haul-away on large appliances.
Talk to our team(888) 419-6820 · Mon–Sat