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WD Purple WD20PURX 2TB SATA 6.0Gb/s 3.5" Hard Drive

  • Built for 24/7 surveillance
  • AllFrame technology for better performance
  • Designed to support up to 32 HD cameras
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Learn more about the Western Digital WD20PURX

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  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years

Customer Reviews of the Western Digital WD20PURX

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4 out of 5 eggsFor the price and for the right reason, should be on your short list

This review is from: WD Purple WD20PURX 2TB SATA 6.0Gb/s 3.5" Hard Drive

Pros: Designed for 24/7/365 use for camera systems, but still usable in other scenarios.
Good price.
Good warranty.
Performance for usage scenario is good.

Cons: Warranty not as long as black and enterprise drives, again these aren't designed to be in that segment.
Slower overall speed even when compared to standard 7200 RPM drives, though these are designed this way on purpose.

Other Thoughts: I was actually quite impressed with the performance of this drive. On my Z97 platform I was able to get over 100 Megabytes a second transfers going when the drive was empty. Not bad for a drive that isn't really designed for speed. Bursts were over 300 megabytes a second for an empty drive.

In my Synology Cloudstation I was able to record 5 different cameras without any stutter from the drive. Even when reviewing the recorded video the playback was smooth even while recording in the background. I can't say for sure on a system with more than this that there wouldn't be stutter, but for my needs it was good.

Overall I've had nothing but good success with WD drives. I've only ever had 1 be DOA (dead on arrival) but was easily replaced by WD's support group.

I definitely prefer these over the WD Green Drives. Those are nothing but super slow and honestly have had a higher failure rate from what I've read than any other WD drive I've ever seen.

0 out of 1 people found this review helpful. Did you? Yes No

4 out of 5 eggsAnother Good WD Drive

This review is from: WD Purple WD20PURX 2TB SATA 6.0Gb/s 3.5" Hard Drive

Pros: Like nearly every Western Digital drive I've owned, this one has performed quite well for me. I'm currently utilizing it in an external enclosure as a full time backup to a home server. I've loaded it with about 1 TB worth of data (music, movies, and pictures) and it didn't skip a beat. The drive runs very quiet and cool and though it may not be the fastest drive, I was still able to pull nearly 150 mb/s read speeds over USB 3.0.

Some people have mentioned that their drive arrived DOA; mine did not. It fired up without any problems.

I have had this drive hooked up and backing up every 3 hours for about 2 weeks now and it hasn't missed a beat. As with all of my other WD drives, I anticipate many years of reliable use out of it.

This drive does feature 64 MB of cache, which is an absolute necessity for any type of heavy usage, especially for the non-stop video recording that this drive is intended for.

Cons: While this drive is SATA 6.0, it is still only 5400 RPM which does limit its overall speed. I realize that this was probably done for longevity and reliability, but it is noticeably slower than my WD Black drives. Granted, they are two different drives meant for two different purposes.

The price on this drive is a little higher than some other offerings, however, if it does prove to be as efficient and reliable as advertised, the additional cost would be well worth it.

Other Thoughts: Over the last 10 years, I have owned more than 20 different hard drives from multiple manufacturers and time and time again, I find myself buying nothing but Western Digital drives. They have proven to be the most reliable drives, and most feature a 5 year warranty (not that I've ever had to warranty one). I fully anticipate having this drive for years to come.

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3 out of 5 eggsNot bad, not the best.

This review is from: WD Purple WD20PURX 2TB SATA 6.0Gb/s 3.5" Hard Drive

Pros: Let's talk specifics:

*2TB - That's ALOT of space! :D

151.84 MB/s sequential read
143.12 MB/s sequential write
24.64 MB/s random read
87.09 MB/s random write

Not the fastest drive on the market obviously, but its fair.

I have some WD Black, Blue & Green Drives lying around.

Comparatively, each excels at its own thing.... that being said. The buyer should also do their homework prior to making a purchase in order to ensure the maximum value out of their dollars spent.

Cons: - I had to put some camera's I had collecting dust to use to adequately test this thing :p

- Price seems to be a bit high compared to similar products from my point of view (other reviewers have noted this as well)

- It is still a HDD... meaning it has moving parts. If this thing gets too cold or too hot, there is likely a possibility of affecting performance. But that's just the nature of the technology.

Other Thoughts: *3 Year Warranty is decent.
*This is a 5400 RPM Drive, but it is designed for 24/7 use. Could be a pro, could be a con.
*Didn't see any performance issues during my load testing, but I don't have a significantly large setup to test against with.
*Not sure how well these would do in a RAID setup for prolonged usage / storage. I may look into this and update my review later.

Overall, I'd say its solid.
But the price doesnt feel justified at this point in time.

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4 out of 5 eggsReliable Hard Drive

This review is from: WD Purple WD20PURX 2TB SATA 6.0Gb/s 3.5" Hard Drive

Pros: The Western Digital Purple series of hard drives are a new series of drives designed for use in home surveillance systems. They are designed to be kept running at maximum capacity for long periods of time. The 2 TB version of the WD Purple is quiet, about 27db and runs cool, even after hours of continuous use. It runs on the SATA 3, 6 GB/sec bandwidth. It runs on very low power, about 5 watts while under load. So you could have literally dozens of them on a server and power wouldn't be an issue. This drive operates at 5400 RPM, which is pretty low for todays modern hard drives, but, considering the fact that it is meant to run non stop and the fact that it is still very fast, it's pretty impressive.
With Crystal Disk Benchmark this drive scored:
154 Sequential Read
146 Sequential Write
Not bad at all for a mechanical hard drive. Sure the WD Black series is faster, but they're also more expensive and they're meant for performance systems, not home security systems.
This drive has 64 MB cache. Which is exactly what you want in a hard drive, the more cache, the better your drive will perform.

Cons: This drive is a little more expensive than some of the cheaper drives out there, but for what you get, it's not unreasonable.

Other Thoughts: Western Digital has 2 other drive types in the surveillance/security systems series. The purple is the lowest in the series. It's meant mainly for home or small business use, 32 cameras or less. However, unless you're recording at very low quality, using a 2 TB drive as storage for 32 cameras would fill up very, very fast. The 2 TB drive would be ideal for 8 or less cameras recording at 1080p/720p, in my opinion. Unless you're using multiple drives. I would recommend that the average consumer with a home security system using HD cameras should get the 4TB drive in this series if they plan to keep their camera feed saved for more than a week or two.
One of the great features of this drive is it's burst write speed. Writing data of 1 GB or less will save almost instantly. Perfect for multiple cameras writing to a single drive.
This drive comes with a 3 year warranty. Not bad for less than $100.

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5 out of 5 eggsWorks great.

This review is from: WD Purple WD20PURX 2TB SATA 6.0Gb/s 3.5" Hard Drive

Pros: Captures video smoothly, quiet ( in my case),runs 2c lower temp over other hd I use

Cons: None really but would like to point out that I have no issues with any hd's really

Other Thoughts: Used on a 6 camera system and shows it can do a lot more and I am sure it can. I have been running this for 13 days strait and have had no issues whatsoever and the viewing was actually better than my old drive that is 5 years old.
I find this drive very suitable for it's job and would recommend it if you get it at the right price. I will post if any issues do occur within the next 9 months.

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4 out of 5 eggsDurability and warranty merits premium over Green

This review is from: WD Purple WD20PURX 2TB SATA 6.0Gb/s 3.5" Hard Drive

Pros: Performance. This is the best-performing Western Digital “Intellipower” (5400RPM) drive I have ever tested. For all metrics except random read, it blows my 2TB Western Digital Green drive out of the water. This is especially true for the random write metric, which is most relevant to always-on DVR/surveillance applications. Its 92MB/s random write speed even exceeds the 90MB/s speed of a 3TB 7200RPM Seagate drive from two years ago, and approaches the 109MB/s speed of a 1TB 7200RPM Western Digital Black drive from last year.

Western Digital WD20PURX. 2000 GB, 5400 RPM, this review
160.70 MB/s sequential read
157.87 MB/s sequential write
29.22 MB/s random read
92.36 MB/s random write

Western Digital WD1003FZEX: 1000 GB, 7200 RPM, purchased 2013
187.01 MB/s sequential read
184.54 MB/s sequential write
60.89 MB/s random read
109.23 MB/s random write

Seagate ST3000DM001: 3000 GB, 7200 RPM, purchased 2012
181.42 MB/s sequential read
178.97 MB/s sequential write
50.22 MB/s random read
90.35 MB/s random write

Western Digital WD20EARS: 2000 GB, 5400 RPM, purchased 2011
112.32 MB/s sequential read
107.88 MB/s sequential write
31.34 MB/s random read
56.34 MB/s random write

Noise. This drive is very quiet. I don’t have any empirical data for noise, but the hard drive activity never became audible above the hum of the CPU fan in my desktop.

Heat. This drive is reasonably cool, though that’s somewhat to be expected for 5400 RPM always-on drives. After benchmarking, temperatures never exceeded 32°C (89.6°F), and stabilized around 31°C (87.8°F).

Warranty. This drive has a 3-year warranty, versus the 2-year warranty with the Western Digital Green drives.

Cons: Price? This drive is available for a 15-20% premium over current Western Digital Green drives. Although the benchmark above is not a comparison to the 2014 drives, I’d still expect this drive to have a modest speed advantage. Even so, I don’t know if it’s worth splurging when filling out a 10-drive NAS or RAID setup. To be honest, the one factor that might tip the scales in favor of the Purple drives is the 50% longer warranty over the Green drives.

Other Thoughts: For most consumer uses, the 5400 RPM Western Digital Green drives are a marginally better value. The performance boost with this Purple drive is modest at best. However, the fact that this drive has ostensibly better reliability combined with a 50% longer warranty might make it worthwhile to spend the extra 15-20% for the Purple, depending on your application.

All performance tests were conducted using CrystalDiskMark 3.0.3 x64 with each drive loaded into the same SATA hot swap bay. Testing was conducted in Windows 7 Ultimate x64 with a socket LGA1156 Intel Lynnfield 860 CPU at 2.8 GHz, 8 GB of RAM, and the Intel P55 3 GB/s SATA controller on the Gigabyte GA-P55-UD4P motherboard.

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2 out of 5 eggs2TB is fast but outrageously overpriced. Warning - Excessive Propaganda included

This review is from: WD Purple WD20PURX 2TB SATA 6.0Gb/s 3.5" Hard Drive

Pros: In speed testing this I used my 20GB RamDrive (read & write speeds @ 5.2GB/sec with a top of the line performance PC win Win7x64 0 minimal bottlenecks) I copied a single large 9 GB file, medium (3-20MB) and small (tens of thousands of tiny 1K files) to and from the RAM drive WD Purple 2TB.I also have enabled write caching in windows, and also turned off write-cache buffer flushing to ensure maximum performance. Inotherwords, you can’t expect to get faster speeds these these:

Large File: 240 MB/sec*
Medium Files: 154 MB/sec
Tiny files: 38MB/sec

(These tiny file transfer rates are ten times faster than a WD Blue 1TB that I tested last year. TEN TIMES.)

Large File: 152 MB/sec
Medium Files:114 MB/sec
Tiny files: 4.875 MB/sec

*I am certain you are thinking I am an idiot because these speeds are out of this world fast. And what it is, is the burst write speeds. Fastest HDD I’ve ever tested. And they did it with their insanely fast burst speeds and cache, which seems to be about in real world numbers ~3GB. Meaning if you transfer a file of 3GB or less it literally takes about 3 seconds or 1GB per second for large and medium files are only a little slower. No kidding. I know this drive has 64MB cache, but it’s certainly been tweaked properly for fast read and writes. This skews the real world transfer rate as the first 3GB goes at 1GB/sec and the rest is at around 150MB/sec for write speeds, and 100MB/sec for write speeds.

I do have a 1080P POE color security camera and each camera takes up about one meg of writing per second. This drive claims to be able to sustain 32 such cameras writing to the drive. I do not think these claims are invalid. It should have no problem doing thusly. I am sure other hard drives wouldn’t strain under this demand either.

Cons: Con is the company, their ethics, warranty length, and the price. I study hard drive pricing (sweet spot and biggest hard drive) since 1995, and the three years before the fake crisis (google it) of November 2011, hard drive prices fell an average of 27.06% per year, per TB. Meaning that if while in the Q3 you paid $73.33/TB in 2009, $50/TB in 2010 and $30/TB in 2011, you should be paying about $12/TB now. Here’s the catch, now you’re paying $50/TB, (thus making this drive $100 not $25). As everything in computers gets twice as fast/big for the half the cost every two years or so, doesn’t this HUGE price escalation seem fishy to you? One day soon, the industry, just like the RAM, monitor price fixing cases, the duopoly of WD and Seagate (Toshiba is too tiny of player) will be investigated by the United States Department of Justice, under the Sherman Antitrust. Mark my words. Hopefully you’lll get a check in ten years years after the lawyers get their majority cut for fighting it. So, that’s the propaganda and the state of the industry, (I warned you) So for taking advantage of customers WD, you lose three stars.

So, all hard drives fail, regardless of manufacture, heat, use, speed, thus you find the one you want and get two and Mirror/RAID-1 (or 5) them if your data is of value. Large hard drive storage space is a commodity, Seagate doesn’t store or retrieve your 0’s and 1’s in a fancier manner than anyone else. So raid up or shut up about reliability. You’ll never know how reliable a generation make and model of a HDD was until 5 years after it comes out.

These aren’t built for end user speed, but they have it. They are designed for sustained write for video, and it should do that just fine.

Other Thoughts: I really don’t know how different WD’s Black/Red/Green/Purple drives are reliability wise. I’d hate to think Black is less reliable and less suitable for anything you’d want to use it for, including surveillance. I think it’s crazy that WD had over a 100% price differentiation in their 2TB lineup. Whatever.

So even though this is an awesome product, one of the fastest mechanical HDD’s I’ve ever tested, burst write speeds are SSD fast for the first 3GB, I don’t like dealing with a company who uses illegal price fixing just to take advantage of the consumer because they can. but what can you do in a duopoly? I also have noticed that “someone” does vote down all negative reviews for WD here on newegg, and upvotes all the positive ones. So I promise you there will be more negative votes for this review than positive, thanks to some small team from WD. I realize how inelastic demand is and you have no choice, so I do recommend this hard drive afterall.

1 out of 2 people found this review helpful. Did you? Yes No

5 out of 5 eggsBalanced Performance.

This review is from: WD Purple WD20PURX 2TB SATA 6.0Gb/s 3.5" Hard Drive

Pros: + A proper drive for real surveillance needs. What this means is that this drive was designed to handle reading and writing multiple streams at once (Up to 32 camera feeds reliably, for instance). This is actually rather difficult for a normal-use hard drive to reliably achieve without stuttering, drops or other random performance issues.

+ In a practical test of 12 cameras at a heavy load of 1080p at 30 frames per second running for one day this drive kept all the video up to speed with no drops and no stuttering. I used a standard desktop oriented 7200 RPM drive to compare and I'd get random drops and stutters here and there. It's not the hardware of the Purple line drives more than it's the firmware. So when you see, "it's only a RED or GREEN drive lolol" it's only half the truth.

+ Appropriately powered at an average of 5.2 Watt peaks, 3-4 average.

+ Quiet, cool and low vibration. Key requirements for a long living 24/7 drive.

+ 2TB is almost just enough to handle a week of storage for 6 cameras at 720p and 24 fps.

Cons: - Compared to the competition of other surveillance drives this drive performs a good bit less in write intensive situations. This drive strives to balance read/write performance equally more than one over the other. As such 32 cameras is definitely the practical limit for this drive. Though depending on the configuration I wouldn't even go that high, maybe only 16 cameras at 1080p, 32 at 720p and a lower frame rate.

- Doesn't have proper sensors to ensure reliable RAID/NAS surveillance storage. While you can technically do it, I wouldn't. Seagate's consumer solutions, for now, offer better scalability and performance in that respect. Say about 15% better performance and up to 16 drives in RAID arrays where WD only suggests up to 8 with Purple.

- An average 3 year warranty for this type product. Not good, not bad, just standard. However, my experience with WD customer service has been a mixed bag to this day. Their support staff would rather deflect responsibility on their part than actually investigate why a product of theirs failed, and that's if they even address your actual problem at all. To them, it's inconceivable it was due to a defect on their end in any way. However, if you do have a standard failure within the warranty period RMAs are of average quality, always re-certified junk (that bothers me if the product fails within the first month. I bought NEW not refurbished, WD) But in all honesty that's just the sad standard that this industry implements at the moment. Things won't be much different with Seagate, though they do offer better customer support instead of just playing the blame game. Of course, as always with customer support YMMV.

- This isn't a con but since I don't have a time turner I cannot vouch for the reliability of this drive over the long term. If and when it fails I'll definitely update my review. As it stands, I don't see any reason for it to prematurely fail under normal conditions and I've had this drive running 24/7 since I've received it with no signs of quality degradation.

- Another "not a con" but definitely needs to be addressed is that I don't see any documentation about this drive supporting outdoor climates. While WD claims these drives handle heat differentials I don't think they mean outdoor winter to outdoor summer temperatures. Which is notable as I know quite a few people implement surveillance systems in non-climate controlled structures. Since WD has yet to get back to me on that question, I cannot say for sure. Perhaps they can respond to this review with actual outdoor (but properly sheltered) operating temperatures, if any.

Other Thoughts: I intentionally avoided using benchmark numbers with this review because I feel they're a misrepresentation of what this drive intends to do and how it operates in the real world under its intended application. While you technically can get a better drive, benchmark-wise, it won't always perform as well due to firmware features the Purple line implements. This drive is designed around the idea of caching streams so you don't incur drops and it does that well.

The WD Purple basically performs like a NAS drive until its firmware kicks in with features to help balance surveillance workloads. This is not a good drive for storage NAS, access and write times will be less optimal and sensors that help balance RAID loads are absent here. This is definitely not a good drive for desktops or OS drives as everything will be less than optimal in that performance arena.

Depending on what type of performance you want this may not be the drive for you. Seagate's surveillance drives, for instance, off better specific scenario performances, particularly in writing and RAID setups. WD chose to go with a more balanced approach in which it doesn't win many real benchmark battles but it does achieve a respectable balance between everything.

This is definitely a good starter drive if you don't know where to start and don't have a crazy high end and demanding surveillance system, and if you do know what you're doing but have a smaller system this drive shouldn't disappoint you, either.

0 out of 1 people found this review helpful. Did you? Yes No

  • William W.
  • 10/12/2014 8:25:30 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsWD20PURX 2TB Success Story

This review is from: WD Purple WD20PURX 2TB SATA 6.0Gb/s 3.5" Hard Drive

Pros: I popped this drive into a newly installed four channel standard definition surveillance DVR system after giving it a good workout in a personal computer with GRC SpinRite. It got through the tests without issue and has been recording video nonstop for a little over a month now (relative to the posting date of this review).

So far, the WD20PURX drive is working without incident.

Cons: None so far.

Other Thoughts: The troubling reviews of this drive made me wonder if purchasing it was a good idea. So far, its performance has been flawless under 24/7 use. If it were going to break down, I would have expected it to do so by now.

Maybe WD did have quality control problems with these early on?

1 out of 1 people found this review helpful. Did you? Yes No

4 out of 5 eggsGood drive but price range high

This review is from: WD Purple WD20PURX 2TB SATA 6.0Gb/s 3.5" Hard Drive

Pros: The WD20PURX (Unknown RPM, 64M Cache) is designed for staying on 24/7 and is not purely based on performance but more on durability. Since it is not possible for me to test durability, I can only give you speed techs. I benchmark this drive against a Seagate ST4000DM000 (5900 RPM, 64M Cache) and a Western Digital WD1003FZEX (7200 RPM, 64M Cache). It is pretty amazing the few more RPMs have when it comes to performance. For the testing I used CrystalDiskMark 3.0.3 x64 on a Windows 8.1 x64 system.

WD20PURX (Unknown RPM, 64M Cache)
Sequential Read : 155.760 MB/s
Sequential Write : 152.498 MB/s
Random Read 512KB : 49.679 MB/s
Random Write 512KB : 94.084 MB/s
Random Read 4KB (QD=1) : 0.571 MB/s [ 139.4 IOPS]
Random Write 4KB (QD=1) : 1.560 MB/s [ 380.8 IOPS]
Random Read 4KB (QD=32) : 1.543 MB/s [ 376.6 IOPS]
Random Write 4KB (QD=32) : 1.568 MB/s [ 382.8 IOPS]

WD1003FZEX (7200 RPM, 64M Cache)
Sequential Read : 202.486 MB/s
Sequential Write : 197.416 MB/s
Random Read 512KB : 65.774 MB/s
Random Write 512KB : 121.537 MB/s
Random Read 4KB (QD=1) : 0.724 MB/s [ 176.9 IOPS]
Random Write 4KB (QD=1) : 2.096 MB/s [ 511.7 IOPS]
Random Read 4KB (QD=32) : 1.893 MB/s [ 462.2 IOPS]
Random Write 4KB (QD=32) : 2.063 MB/s [ 503.6 IOPS]

Seagate ST4000DM000 (5900 RPM, 64M Cache)
Sequential Read : 143.287 MB/s
Sequential Write : 129.919 MB/s
Random Read 512KB : 35.893 MB/s
Random Write 512KB : 65.565 MB/s
Random Read 4KB (QD=1) : 0.365 MB/s [ 89.0 IOPS]
Random Write 4KB (QD=1) : 0.938 MB/s [ 229.0 IOPS]
Random Read 4KB (QD=32) : 0.870 MB/s [ 212.5 IOPS]
Random Write 4KB (QD=32) : 0.890 MB/s [ 217.3 IOPS]

What this tells me is that the drive speed is somewhere between 5400-5900 RPMs and that the IntelliPower is indeed working fairly well to get better performance (as you can see when compared to the Seagate 5900 RPM drive).

Cons: Price, there are many other 2TB drives out there about 30% cheaper that are 7200 RPMs with 64MB cache.

1 out of 4 people found this review helpful. Did you? Yes No

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