Western Digital Purple, 4TB WD40PURX-20PK Fascicule

WD PURPLE

™

Surveillance Hard Drives

WD Purple Surveillance Storage is built for 24/7 
always-on surveillance in high-definition security 
systems that use up to eight hard drives and up to 32 
cameras. Exclusive AllFrame

™

 technology works with 

ATA streaming to reduce error pixilation and video 
interruptions that occur when desktop hard drives are 
incorrectly used as storage in security systems. 

INTERFACE

SATA 6 Gb/s

FORM FACTOR

3.5-inch

ROTATIONAL SPEED

IntelliPower

™

CAPACITIES

1 TB to 4 TB

MODEL NUMBERS

WD40PURX

WD30PURX

WD20PURX

WD10PURX

Note: Not all products may 

be available in all regions of 

the world.

Product Features

Desktop drives vs.  
surveillance-class storage
WD Purple surveillance-class storage 

has been tested to be compatible 

in a wide-range of security systems. 

These drives are designed to replace 

standard desktop drives that were 

not designed for the harsh 24/7 

always-on, high-definition surveillance 

environment. Desktop drives are 

built to run for only short intervals 

and are not engineered to withstand 

high-temperature fluctuations and 

equipment vibrations found in a 

typical surveillance application.

Surveillance storage for  
peace-of-mind 
Whether you’re protecting your 

personal assets and loved ones 

or monitoring the business you 

worked hard to build, you can rely 

on surveillance-class storage built 

by one of the largest hard drive 

manufacturers in the world.  

WD Purple Surveillance Hard Drives 

are designed for high temperature, 

always-on, surveillance security 

systems to ensure reliability and 

quality video play back when 

you need it most. Experience the 

security of knowing you’re using a 

surveillance–class drive designed by 

a leader in the hard drive industry. 

Improve performance  
with AllFrame
WD Purple surveillance-class hard 

drives are equipped with AllFrame 

technology which works with ATA 

streaming to reduce pixilation and 

video interruptions that commonly 

occur when desktop hard drives are 

incorrectly used as storage in security 

systems. Error pixilation and video 

interruptions mean missing and lost 

footage, which can be a serious 

problem when a surveillance event 

occurs and your footage needs to be 

retrieved. WD Purple with AllFrame 

provides the confidence you should 

expect when it’s time to play back 

and review critical surveillance 

footage. 

Engineered for compatibility
WD Purple surveillance hard drives 

are built for compatibility with 

industry-leading chassis and chip 

set manufacturers for seamless 

integration into your new or existing 

video surveillance system. 

Optimized performance for  
up to 32 HD cameras
WD Purple hard drives are optimized 

to support up to 32 high-definition 

surveillance cameras, giving you the 

flexibility to upgrade and expand your 

security system in the future.

™

Low power consumption is crucial 

in high-temperature always-on 

surveillance environments.  With 

exclusive IntelliSeek technology,  

WD Purple drives calculate the 

optimum seek speeds which lowers 

power consumption, noise and 

vibration that can damage and 

cause desktop drives to wear out 

more quickly. When you invest in a 

premium surveillance-class drive you 

worry less while enjoying the benefits 

over a longer period of time.

™

A fine-tuned balance of spin 

speed, transfer rate, and caching 

algorithms designed to deliver both 

significant power savings and solid 

performance.

3-year limited warranty 
(worldwide) 
Trust a company with the confidence 

to stand behind their surveillance 

storage products with a 3-year 

limited warranty worldwide.

1 million hours MTBF
Best-in-class reliability for mainstream 

3.5-inch form-factor surveillance 

storage.*

* Based upon dual tuner system operating in typical 30°C air ambient 

environment.

The WD Advantage

WD puts our products through extensive Functional Integrity Testing (F.I.T.) prior to any product launch. This testing ensures our products consistently meet the 

highest quality and reliability standards of the WD brand. WD also has a detailed Knowledge Base with more than 1,000 helpful articles as well as helpful software 

and utilities. Our customer support lines have longer operational hours to ensure you get the help you need when you need it. Our toll-free customer support lines 

are here to help or you can access our WD Support site for additional details.