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Western Digital

Western Digital WD40PURZ- 4TB SATA

Western Digital WD40PURZ- 4TB SATA

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Uncompromising Storage

Built for 24/7, always-on, high-definition security systems. With a supported workload rate of up to 180 TB/yr and support for up to 64 cameras, WD Purple drives are optimized for surveillance systems. WD Purple 10TB & 12TB drives are designed to support Deep Learning analytics in AI capable NVRs, and feature an enhanced workload rating of up to 360TB/yr, and up to 16 AI channels for analytics within the system.

The Right Drive for the Job

WD Purple drives have been engineered specifically for the extreme demands of high temperature, 24/7 surveillance systems.

Performance You Can Trust

From a worldwide leader in the storage industry, WD Purple is engineered for quality video playback when you need it most.

Expand Your View to 64

WD Purple drives are optimized to support up to 64 cameras, giving you flexibility to upgrade or expand your security system.



Seamless Integration

With a wide range of industry-leading enclosures and chipsets supported, you're sure to find the configuration and compatibility that's right for your NVR.


Less is More

Low power consumption is a must in a high-temperature, always-on surveillance environment. IntelliSeek technology helps reduce damaging ambient noise and vibrations.


Designed for Surveillance

The WD Purple drive is designed for both DVR and NVR security systems, and is compatible with many of the the leading surveillance and security manufacturers. We can help you find the perfect storage for your system.

3-Year Limited Warranty

Every WD Purple drive comes with a 3-year limited warranty, so you can be confident of your surveillance storage.


What is the difference between a desktop drive and a WD Purple drive?

The WD Purple drive is designed specifically for 24/7 DVR and NVR surveillance solutions and is optimized with AllFrame technology for system playback and performance.

WD Purple drives support 3x the workload rating of desktop drives, making them more capable of handling the higher demands of video surveillance systems.

What capacity do you recommend for my surveillance?

Higher capacity WD Purple drives allow you to store more footage, more high definition video, and more high quality frames per second. WD recommends 4TB or greater for your DVR or NVR surveillance solution.

Easy backup and upgrade

Acronis True Image WD Edition software, available as a free download, can clone drives and backup your operating system, applications, settings and all of your data.

Trust Your View

All WD Purple drives are equipped with AllFrame technology, which improves ATA streaming to reduce frame loss, improve overall video playback, and more.

Technical Specifications

WD Purple is built for personal, home office or small business surveillance systems using up to 64 HD cameras.



1TB - 12TB


SATA 6Gb/s

Form Factor

3.5 Inch

Disk Speed

5400 rpm, 7200 rpm


Model # Capacity Interface RPM Class Cache
WD121PURZ 12TB SATA 6Gb s 7200 rpm 256MB
WD100PURZ 10TB SATA 6Gb s 5400 rpm 256MB
WD101PURZ 10TB SATA 6Gb s 7200 rpm 256MB
WD80PURZ 8TB SATA 6Gb s 5400 rpm 128MB
WD81PURZ 8TB SATA 6Gb s 5400 rpm 256MB
WD60PURZ 6TB SATA 6Gb s 5400 rpm 64MB
WD50PURX 5TB SATA 6Gb s 5400 rpm 64MB
WD40PURZ 4TB SATA 6Gb s 5400 rpm 64MB
WD30PURZ 3TB SATA 6Gb s 5400 rpm 64MB
WD20PURZ 2TB SATA 6Gb s 5400 rpm 64MB
WD10PURZ 1TB SATA 6Gb s 5400 rpm 64MB
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