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WD Purple WD42PURZ 4TB 3.5" Surveillance HDD
WD Purple WD42PURZ 4TB 3.5" Surveillance HDD
WD Purple WD42PURZ 4TB 3.5" Surveillance HDD
WD Purple WD42PURZ 4TB 3.5" Surveillance HDD
WD Purple WD42PURZ 4TB 3.5" Surveillance HDD
WD Purple WD42PURZ 4TB 3.5" Surveillance HDD
WD Purple WD42PURZ 4TB 3.5" Surveillance HDD
WD Purple WD42PURZ 4TB 3.5" Surveillance HDD
WD Purple WD42PURZ 4TB 3.5" Surveillance HDD
WD Purple WD42PURZ 4TB 3.5" Surveillance HDD

WD Purple WD42PURZ 4TB 3.5" Surveillance HDD

Engineered specifically for mainstream surveillance systems. AllFrame technology delivers optimizations for write-intensive, low bit-rate, high stream-count workloads typical to mainstream surveillance applications. Supports up to 180 TB/yr workload rate². | ²Workload 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. 1TB¹ through 3TB support up to eight bays; 4TB and above support up to 16 bays and employ tarnish-resistant components for harsher environments. ¹As used for storage capacity, 1TB = one trillion bytes. Actual user capacity may be less, depending on operating environment.

Engineered specifically for mainstream surveillance systems. AllFrame technology delivers optimizations for write-intensive, low bit-rate, high stream-count workloads typical to mainstream surveillance applications. Supports up to 180 TB/yr workload rate². | ²Workload 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. 1TB¹ through 3TB support up to eight bays; 4TB and above support up to 16 bays and employ tarnish-resistant components for harsher environments. ¹As used for storage capacity, 1TB = one trillion bytes. Actual user capacity may be less, depending on operating environment.

Capacity:

10 TB

WD Purple WD42PURZ 4TB 3.5" Surveillance HDD

Engineered specifically for mainstream surveillance systems. AllFrame technology delivers optimizations for write-intensive, low bit-rate, high stream-count workloads typical to mainstream surveillance applications. Supports up to 180 TB/yr workload rate². | ²Workload 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. 1TB¹ through 3TB support up to eight bays; 4TB and above support up to 16 bays and employ tarnish-resistant components for harsher environments. ¹As used for storage capacity, 1TB = one trillion bytes. Actual user capacity may be less, depending on operating environment.

Engineered specifically for mainstream surveillance systems. AllFrame technology delivers optimizations for write-intensive, low bit-rate, high stream-count workloads typical to mainstream surveillance applications. Supports up to 180 TB/yr workload rate². | ²Workload 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. 1TB¹ through 3TB support up to eight bays; 4TB and above support up to 16 bays and employ tarnish-resistant components for harsher environments. ¹As used for storage capacity, 1TB = one trillion bytes. Actual user capacity may be less, depending on operating environment.

Price comparison

Price data powered by pricesAPI.io

Last updated at 03/21/2026 21:38:45

TechCart

$148.75

Western Digital Purple Surveillance Hard Drive (4TB, WD42PURZ)

Delivery $48

techgate.com.au

$202.98

WESTERN DIGITAL Purple 4TB 3.5" Surveillance HDD SATA3 24x7 64 Cameras AV NVR DVR -

Delivery between Wed – Fri $12.99

mavrolert.com

$340.00

Disk 3.5 4TB WD Purple 256Mb SATA 6Gb/s 54rp - Video Surveillance

Price history

Price history

Reviews

28 October 2022

originally posted on pbtech.co.nz

It works in my 4 camera CCTV system (4K cameras). Haven't installed the remaining 4 yet so will see if it manages with 8 x 4K streams once they've been installed (the packaging implies that it'll be fine).

4GB WD Purple Surveillance Hard Drive
15 January 2022Bigdon

originally posted on westerndigital.com

I replaced my 2GB Surveillance Hard Drive with the 4GB WD Purple Surveillance Hard Drive. So far everything is recording fine, and I can retain surveillance footage longer without the drive recording over it

Commercial grade at a fair price
22 December 2021OfficePro

originally posted on westerndigital.com

I have a lottttt of data so I got this. I did not realize the transfer rates on 3.5inch spinning drives have gone up. With a USB 3 adapter/reader dock this was transferring over 100mbps. It makes the spinning drive sounds that these make, but it is actually quit quiet. I use it exposed versus enclosed so it is a little more clicky sounding, but sound wise, if it were enclosed, it would probably be unnoticeable. Plus, it doesn't sound that bad - I actually miss the sound of data moving around haha. I would need it to be used for years to really write on reliability as I have neevr owned these, but looking at the specs, this appears to be a similar design, if not the same drive as their commercial grade drives for business. I always try to go for the best and I take ... MoreI have a lottttt of data so I got this. I did not realize the transfer rates on 3.5inch spinning drives have gone up. With a USB 3 adapter/reader dock this was transferring over 100mbps. It makes the spinning drive sounds that these make, but it is actually quit quiet. I use it exposed versus enclosed so it is a little more clicky sounding, but sound wise, if it were enclosed, it would probably be unnoticeable. Plus, it doesn't sound that bad - I actually miss the sound of data moving around haha. I would need it to be used for years to really write on reliability as I have neevr owned these, but looking at the specs, this appears to be a similar design, if not the same drive as their commercial grade drives for business. I always try to go for the best and I take my data integrity very seriously which si why I chose this specific model. The specs that relate to reliability were the highest I could find at a reasonable price point so I am not disappointed. It actually stays quite cool as I transferred multiple terabytes worth of data at a time and it never really got hot, just warm - and this was in an open dock without a fan or active cooling. When I need to access data or write, it is very quick and never gives me trouble. I am pretty sure I will have this for years - especailly as I always get an overkill for my needs to ensure reliability and longevity.

Specification

General
Device TypeHard drive - internal
Capacity4 TB
Form Factor3.5"
InterfaceSATA 6Gb/s

Price comparison

Updated about 1 month ago
TechCart

$148.75

Western Digital Purple Surveillance Hard Drive (4TB, WD42PURZ)

Delivery $48

techgate.com.au

$202.98

Out of stock

WESTERN DIGITAL Purple 4TB 3.5" Surveillance HDD SATA3 24x7 64 Cameras AV NVR DVR -

Delivery between Wed – Fri $12.99

mavrolert.com

$340.00

Disk 3.5 4TB WD Purple 256Mb SATA 6Gb/s 54rp - Video Surveillance

Price history

Price history

Reviews

28 October 2022

It works in my 4 camera CCTV system (4K cameras). Haven't installed the remaining 4 yet so will see if it manages with 8 x 4K streams once they've been installed (the packaging implies that it'll be fine).

originally posted on pbtech.co.nz
4GB WD Purple Surveillance Hard Drive
15 January 2022

I replaced my 2GB Surveillance Hard Drive with the 4GB WD Purple Surveillance Hard Drive. So far everything is recording fine, and I can retain surveillance footage longer without the drive recording over it

Bigdon originally posted on westerndigital.com
Commercial grade at a fair price
22 December 2021

I have a lottttt of data so I got this. I did not realize the transfer rates on 3.5inch spinning drives have gone up. With a USB 3 adapter/reader dock this was transferring over 100mbps. It makes the spinning drive sounds that these make, but it is actually quit quiet. I use it exposed versus enclosed so it is a little more clicky sounding, but sound wise, if it were enclosed, it would probably be unnoticeable. Plus, it doesn't sound that bad - I actually miss the sound of data moving around haha. I would need it to be used for years to really write on reliability as I have neevr owned these, but looking at the specs, this appears to be a similar design, if not the same drive as their commercial grade drives for business. I always try to go for the best and I take ... MoreI have a lottttt of data so I got this. I did not realize the transfer rates on 3.5inch spinning drives have gone up. With a USB 3 adapter/reader dock this was transferring over 100mbps. It makes the spinning drive sounds that these make, but it is actually quit quiet. I use it exposed versus enclosed so it is a little more clicky sounding, but sound wise, if it were enclosed, it would probably be unnoticeable. Plus, it doesn't sound that bad - I actually miss the sound of data moving around haha. I would need it to be used for years to really write on reliability as I have neevr owned these, but looking at the specs, this appears to be a similar design, if not the same drive as their commercial grade drives for business. I always try to go for the best and I take my data integrity very seriously which si why I chose this specific model. The specs that relate to reliability were the highest I could find at a reasonable price point so I am not disappointed. It actually stays quite cool as I transferred multiple terabytes worth of data at a time and it never really got hot, just warm - and this was in an open dock without a fan or active cooling. When I need to access data or write, it is very quick and never gives me trouble. I am pretty sure I will have this for years - especailly as I always get an overkill for my needs to ensure reliability and longevity.

OfficePro originally posted on westerndigital.com
Dependable surveillance drive
14 November 2022

I have about 30 of these drives in the field (or varying capacities) with zero failures. I would recommend these over the Seagate SkyHawk drives.

Matthew originally posted on bhphotovideo.com
Great swcurity camera drive.
7 January 2023

So far so good. I installed this in a hikvision nvr woth two cameras and it is just purring along.

M43tango originally posted on westerndigital.com
Great upgrade from a 3TB 5400 rpm WD Purple
7 January 2022

Bought this drive to replace an older 3TB drive for camera system. This 7200 rpm drive is quiet, and runs relatively cool inside an Orico aluminum drive enclosure. I have a USB powered fan blowing across the case that really helps, I'm sure. Overall very pleased with this new drive.

Harold originally posted on bhphotovideo.com
Hikvision NVR
21 March 2023

Installed in a Hikvision NVR. Install was easy and formatting was without a problem. Working fine.

Electrichorseman originally posted on westerndigital.com
Perfect for Video Surveillance!
17 July 2022

I have 4 of these (so far) in my Hikivision NVR, and they work great for 24/7 use. Temperatures with proper airflow are where they need to be. Packaging from B&H arrived with proper care to keep the drives safe. Look no further if you need to fill your DVR/NVR.

Taylor originally posted on bhphotovideo.com
Reliable drives for for critical applications.
16 April 2023

I purchased two 18Tb WD Purple Pro drives for a Ubiquiti NVR that I set up at a construction site. I have used these drives before with other UniFi NVRs and they work very well. I just added several additional 4K cameras so I am also adding two more drives to the system. We are using the drives for security and to document the build. I have had other WD Purple Pro drives in use for over a year on similar projects and they have been working well.

Bill B. originally posted on westerndigital.com
Reliable movie server drive
20 February 2022

I found the purple 4tb a good choice for a movie server data base. At 5400 speed it isslower in transfer rates, however it functions perfectly for my purposes. A good choice.

NeilM originally posted on westerndigital.com

Specification

General
Device TypeHard drive - internal
Capacity4 TB
Form Factor3.5"
InterfaceSATA 6Gb/s