Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ
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Availability:
12 left in stock
Arrives
Tuesday, Jun 24
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Capacity: 64 MB Cache
Style: 4TB
Pattern Name: Hard Drive HDD
Features
- Built for 24/7 surveillance
- AllFrame technology for better performance
- Designed to support up to 64 HD cameras
- Engineered for compatibility
- 3-year manufacturer's limited warranty
Description
WD Purple drives are built for 24/7, always-on, high-definition security systems. WD Purple surveillance storage feature Western Digital’s exclusive AllFrame technology, so you can confidently create a security system tailored to the needs of your business. Using AllFrame technology, WD Purple drives improve video capturing and helps to reduce errors, pixelation, and video interruptions that could happen in a video recorder system. WD Purple drives have an enhanced workload rating that supports systems designed for 24x7 video recording with up to 64 cameras.
Standing screen display size: 10.5 Inches
RAM: 4000 GB
Hard Drive: Mechanical Hard Disk
Wireless Type: 802.11a/b/g/n
Number of USB 2.0 Ports: 1
Brand: Western Digital
Series: Purple
Item model number: WD40PURZ
Operating System: Windows/Mac
Item Weight: 1.5 pounds
Product Dimensions: 5.79 x 4 x 1.03 inches
Item Dimensions LxWxH: 5.79 x 4 x 1.03 inches
Color: Purple
Flash Memory Size: 4 TB
Hard Drive Interface: Serial ATA
Hard Drive Rotational Speed: 5400 RPM
Voltage: 120 Volts
Batteries: 1 Lithium Ion batteries required.
Manufacturer: Western Digital Bare Drives
Is Discontinued By Manufacturer: No
Date First Available: April 26, 2017
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Jun 24
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Capacity: 128 MB Cache
Style: 6TB
Pattern Name: Hard Drive HDD
Great hard drives , as anyone should know , they are sensitive , so when they came packaged separately in their own box , loosely put inside a large box with no shipping material to cushion and protect from being bounced around , I question the longevity . Time will tell .
Reviewed in the United States on December 3, 2022 by Kindle Customer
Capacity: 256 MB Cache
Style: 10TB
Pattern Name: Hard Drive HDD
Purchased this HD for our camera system and we are able to record roughly 2 weeks of video from 9 cameras. It was easy to install and very quiet.
Reviewed in the United States on December 4, 2022 by Jennifer Morris
Capacity: 64 MB Cache
Style: 4TB
Pattern Name: Hard Drive HDD
Before reading any review read this: there is a key problem with the way this section is set up. For some reason it lists a very old (2014) model of this drive along with the same New Generation improved model. What makes that bad is that the user comments are both mixed together, so any problems with the original drive appear right on top of the list and may be misleading. It’s very important then to look at the tiny print at the top of each comment and see if the user is talking about the Old Generation style or the New Generation style. To be clear, I am talking about the improved New Generation style. If you are not already familiar with the difference between a general purpose hard drive and one designed for video security let me start with a very basic comparison. This comparison is very broad and not a textbook definition by any means. HOW IT WORKS Computers write and read their information to a hard drive in tiny chunks that are scattered randomly all over the disk, so the recording/playback heads are constantly jumping from place to place. Speed of access in a computer is extremely important. On the other hand video surveillance recorders write and read their information more like an old-fashioned tape recorder, pretty much just like what the cameras are seeing in real time. The recording/playback heads are only required to jump to another spot on the disk when you want to play back an event. So random-access search time is far less of a priority than the non-stop grunt work of recording dependably 24/7/365 without a hiccup. The two processes are entirely different job tasks. COMPARISON: BRAND A VS. BRAND B There are two major brands of specialized video surveillance hard drives. My NVR is one of the most respected out there for users who have a lot of experience and they chose to use the other brand of hard drive. Kudos to them because many other video security manufacturers believe you’ll never know what’s inside so they install the cheapest no-name generic hard drive they can buy. I’ve been buying this brand of security system for years and have been very happy with it and when I wanted to increase my drive capacity from 2TB to 4TB I had no idea if switching to a WD brand drive would make any difference at all. Engineers told me that the two brands are not identical in their design philosophy, each brand considering certain design parameters to be the slightly better way to go. IS THERE A DIFFERENCE Because the NVR software, firmware and other factors play at least as much of a role in performance as the hard drive I was looking to improve these things: 1. Drive noise 2. Drive heat 3. Stuttering (when the image suddenly jumps or drops a few frames, usually on playback) I measured the operating temperature both drives in real-life use in identical conditions using a precision instrument. The original drive was operating at 97.7 F and the WD measured at 91.6 F. That 6 degree difference is significant but not substantial. Likewise I used a calibrated sound level meter for each drive. The original drive came in at 47 dBA. The WD was at 46.9 dBA, virtually identical. The last condition is more difficult to quantify because stuttering is sporadic, so in my opinion I would classify any differences in a typical use scenario as atypical, was I experiencing fewer or more instances of stuttering or about the same? I tried to make my comparison without prejudice for or against either brand because I really don’t care whose name is on it. I bought the WD primarily to double my recording capacity and hence the number of days it would record events. That being said in real-life everyday use I have to lean slightly toward the WD as having fewer instances of jumping, stuttering or frame dropping in my particular system and it does seem to handle a few second backspace more smoothly than the original drive. Maybe another way of putting it is that the WD seems to be playing nicer with the NVR’s software/firmware than the brand the manufacturer originally spec’d. WILL IT IMPROVE MY SECURITY SYSTEM The short answer is not really. Any differences in operating temperature and noise level are too close to be significant and both brands are optimized for video security so abnormalities like stuttering are just that, and are not completely attributable to the hard drive. We can say categorically that the brand or type of hard drive you use will not improve the image resolution (picture quality) of your system. BOTTOM LINE SATISFACTION All things considered the WD is consistently a few bucks more than the other brand and I’m not a big fan of ever paying more if I don’t have to. So based on the few things I could measure and one that I could only perceive I have to say I do like this drive and I believe I made the right choice.
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Reviewed in the United States on September 26, 2017 by PhotoGraphics
Capacity: 256 MB Cache
Style: 4TB
Pattern Name: Hard Drive HDD
I needed to replace the 2 TB hard drive in my NightOwl 3 MP Surveillance Camera system, because the original hard drive quit recording after three years of service. I was on the fence about whether to invest my money into replacing the failed hard drive with this new Western Digital 4TB Purple hard drive, or spend a little bit more money, and replace the entire system. Since I’m not a Computer Tech by any means, the thought of ignoring the manufacturer’s warning labels against opening up the DVR case, and then then having to poke around with a screw driver, to uninstall the old, to replace with it with this new one made me nervous. I understand hard drives to be fragile, and the thought of handling these hard drives during the swap, was scary to me. I couldn’t afford to mess it up. Much to my surprise, it was an extremely simple task. I did watch a utube video on it beforehand, which did help me. It took more time to unscrew the DVR case, than than it did to swap out the parts. It’s just a matter of unplugging the old one, and plugging in this new one. Close the case back up, power on, and follow the on prompts in the screen. This 4Tb Western Digital Purple hard drive made especially for surveillance applications, installs itself from there. It was quick. It was easy, and it has performed. The best part is that it saved me money from having to purchase a whole new system. I’m very happy with my purchase. I believe it was money “well spent”, and I can highly recommend this Purple hard drive, with confidence. Thank you, Western Digital, for producing a quality product
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Reviewed in the United States on July 22, 2022 by DD
Capacity: 64 MB Cache
Style: 1TB
Pattern Name: Hard Drive HDD
Western Digital is by far the best when it comes to surveillance hdd. Others have let me down.
Reviewed in the United States on December 2, 2022 by Stacy Cox
Capacity: 64 MB Cache
Style: 4TB
Pattern Name: Hard Drive HDD
Arrived early and exactly what I ordered
Reviewed in the United States on December 7, 2022 by wade sabol
Capacity: 256 MB Cache
Style: 4TB
Pattern Name: Hard Drive HDD
Installed this WD Purple 4TB in my Lorex DVR (from 2016) that had a 2TB WD Purple. The drive doubled recording capacity while still keeping the performance. The newer drive has 256mb cache, vs. the older unit had 64mb cache, which means it would perform better on writing/reading, with lower heat and longer MTBF.. all in all the 256 MB WD Purple drive is a win win.. Must have if you are upgrading your DVR / NVR storage.
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Reviewed in the United States on October 17, 2022 by M. Bose
Capacity: 256 MB Cache
Style: 6TB
Pattern Name: Hard Drive HDD
Works as it should. In service for several months now with no issues
Reviewed in the United States on November 21, 2022 by mark krchmar