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WD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive -Bulk

  • Storage for 1 to 5 bay NAS solutions
  • NASware 2.0
  • 3D Active Balance Plus
  • Longer warranty coverage
  • Need help? We offer premium support
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BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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Learn more about the Western Digital WD40EFRX

Quick Info

Warranty

  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years


Customer Reviews of the Western Digital WD40EFRX

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  • Chris L.
  • 9/22/2014 8:54:50 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsWD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive -Bulk

This review is from: WD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive -Bulk

Pros: Solid Fast. Zero Problems. Worth the money for a NAS build. I had to replace desktop drives in my RAID with these.

Cons: Pricey.

Other Thoughts: If your in the market to build a home NAS box or have a unit buy the WD Red drives you will thank you self, over saving 10 buxs on desktop drives that will fail on avg. more than a NAS hard drive. I was able to save a very large RAID with these. I'm now seeing even more throughput and less power. Very happy with the drives WILL be buying more in due time.

Did you find this review helpful? Yes No

  • Geoffrey C.
  • 9/17/2014 7:56:51 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsDrive failed after 6 months of use

This review is from: WD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive -Bulk

Pros: Reasonable performance per dollar, access times are acceptable in a modern SATA array. Spin up times are.... acceptable... for a 5400rpm drive.

Cons: Drive isn't actually "4TB", drive is only 3.63TB, which is a good 12% off.

Failure at 6 months of use with no warnings and no ability to recover any lost data.

Sorry WD, those two details get you a single star - hard drives are your bread and butter and that's not acceptable for a "NAS Rated" drive.

Drive is slow to spin up on NAS applications where the drive should get long periods of use - wake cycle works "effectively" but should NOT be used in a regular application. Get a Caviar black drive. It's not that its less than 7200rpm - it's that it is not intended for desktop use (even secondary drive).

At 6 months of use the drive suddenly clunked several times (likely head crash) and then a large portion of the drive's contents were gone. Restart the NAS box and the drive is no longer recognized as being formatted. Tried recovery tools, no dice. A format of the drive has yielded a clean slate and no apparent errors. No detected physical damage to the disk and all sectors work fine. Mysterious errors shouldn't happen where suddenly your data vanishes and the drive is fine. EVER.

As this was in process of rebuilding the array (of course, that's when it fails), all of the files on the drive were lost completely.

If the drive shows any other issues once the array is rebuilt I'm RMAing, till then tentatively fingers crossed.

Other Thoughts: All hard drive manufacturers have way too many failure rates now. Seagate and Western Digital used to both be known for rock solid drives, but infant mortality issues are a plague. I have no idea if they just reduced the quality of components or if the higher platter densities are to blame, but this is just getting absurd. I've had way too many drives fail in the past 5 years compared to the previous fifteen.

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

  • Christopher H.
  • 9/11/2014 10:38:33 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsSo far so good.

This review is from: WD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive -Bulk

Pros: Do as they should. Go in, partition and format, fill with whatever goodies. Running theses in a server machine(tower). 3 4TB and 1 1TB all went in at once. All 4 drives going strong, no issues detected as of yet. All 4 formatted just fine once i figured out how to do it properly in linux for 2+ TB drives :)

Cons: Nothing really. Only ever had good things to say about WD drives in the 10+ years ive been using them exclusively. Guess i knocked 1 egg off just due to the extra pricing of these, WD used to offer things like intellipower and other NAS systems on their regular drives at fractions of this cost. Now with the color system they can charge a bit more for NAS HDDs and look just fine doing it.

Other Thoughts: Overall love WD drives, ive had a single drive die on me in the last 10 years. I still have some older 320gig HDDs that are still going strong, but have very little use being IDE and so small. So they sit in storage in case i should need them again.

Would recommend these to anyone looking for good reliable home/small business NAS drives. Using mine for media storage mostly, so light duty work i would say.

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  • Oren P.
  • 9/5/2014 11:33:08 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsWD Red Keeping Me Secure

This review is from: WD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive -Bulk

Pros: High capacity. High speeds but longer life due to IntelliPower. Works wonderfully with my Drobo 5N!

Cons: Not really a problem, but 5 of these in a Drobo can be LOUD in a quiet room.

Took off one star for the weird story in "Other Thoughts"

Other Thoughts: I had heard lots of reports of DOA, but I needed the large capacity and have been using WD for over 8 years, so I thought I'd take the chance. I bought two (2) of these back in Spring '14 and had them working fine in my Drobo 5N. They even went through a brownout with no problem! (had to fix the Drobo, but not important here).

A Strange thing happened though when the Drobo reported that one had failed and needed to be replaced. I immediately bought 3 more of these and proceeded to scan the bad drive for errors. Turns out, after running all WD Lifeguard tests, the drive was fine, so I formatted it and popped it back in. Now I have a 5-drive, 20TB Drobo 5N sitting nice and healthy on my network.

AWESOME Product WD!!!

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

  • Jason W.
  • 8/25/2014 2:01:02 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsGreat choice if they work.

This review is from: WD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive -Bulk

Pros: I purchased two of these, and plan on buying more. From a NAS perspective, they really own the game right now. When I got mine, I slow formatted, scanned and did test runs with data (copy 3.6TB worth data to drive and back and check integrity). All was good. Now they sit happily in my NAS, doing what they do best, store data.

Cons: I gave them only 4 stars because of the failure rate. Countless amount of people have had 60%+ DOA failure rate on these drives, so it is not a figure to ignore. Make sure if you are ordering these, that they are not time crucial components. If you need them in a pinch, you have to know that a 60%+ DOA possibility exists. Once they are working, you will be happy.

4 out of 6 people found this review helpful. Did you? Yes No

  • Bryce S.
  • 8/21/2014 7:56:27 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsGreat Idea/ No QC

This review is from: WD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive -Bulk

Pros: They run cool! They look cool!

Cons: Bought 2, RMA'ed two, had to wait for the second one as they were low on stock, no surprise since they fail a lot!

Other Thoughts: The 2tb reds seem to work fine, I have 6 of them, no problem. The 4tb, not so much. I am afraid to use them.

Manufacturer Response:

Dear Bryce, we apologize for the continued inconvenience you have experienced with your devices, as this is unexpected. All Western Digital products are tested and determined to meet WDs stringent quality standards before they are shipped to our resellers. Please consider contacting our support department directly so we are able to work with you and provide a positive overall outcome to your experience. You may contact us and mention your Newegg review at (855) 559-3733, or via our support website: http://support.wdc.com/contact/contact.asp?lang=en&ct=wdred

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

  • Zachary G.
  • 8/19/2014 2:37:24 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat drive for back up storage, and NAS

This review is from: WD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive -Bulk

Pros: Ordered 5 of these over two orders, got 2, then 3. Currently only 2 of them are in operation, but working great. NONE were DOA. Used WD Data Lifeguard tools to test each one indiviually to ensure no issues.

Cons: None thus far...

Other Thoughts: I jumped the gun on these a bit. I have digitized just about ALL of my entire 300+ DVD and 100+ Blu Ray collection. Using .mkv format, totally uncompressed, files are HUGE!! 25-40 gigs per Blu Ray. Curently the files are residing on a bunch of 2 TB drives, need to migrate them to these for backup. These drives used for backup of photos and home video storage and back up.

End game is to have a rack mountable storgae server built for a network rack in my basement. Server not even built or ordered yet, will be running 5-8 of these drives fro hot swap bays on thr server, likely running ZFS.

2 out of 3 people found this review helpful. Did you? Yes No

  • Don N.
  • 8/18/2014 1:11:30 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsAll 4 drives ordered running cool and silent with no issues

This review is from: WD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive -Bulk

Pros: Runs cool and silent. Inside the box, the drives were packaged unusually well in a protective cocoon of thick-plastic bubble wrapping.

Cons: "Red" drives are not as fast as the "Black" series but theoretically run cooler and more reliable.

Other Thoughts: Installed all 4 drives in a Lenovo ix4-300d NAS unit. Waited 48 hours for the RAID-5 striping to complete been running smoothly ever since. Was worried about the bad reviews regarding initial reliability but found no issues at all.

Did you find this review helpful? Yes No

  • Kevin S.
  • 8/17/2014 7:40:53 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsWorks with DirecTV DVR

This review is from: WD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive -Bulk

Pros: .

Cons: .

Other Thoughts: Popped this in a Thermaltake ST0005U-R eSATA Docking Station. (I formatted it first - I think NTFS.) Then I attached it to my new DirecTV HR44 Genie DVR and crossed my fingers. Success! 4 terabytes of DVR storage! (Well, maybe something like 3.6 after the format.) It's been going flawlessly for over a week, so if you're wondering if this will work with the latest DirecTV DVRs - my experience says yowzah!

Did you find this review helpful? Yes No

  • Steven H.
  • 8/11/2014 6:49:48 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsNot the only choice for NAS but the best

This review is from: WD Red WD40EFRX 4TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" NAS Internal Hard Drive -Bulk

Pros: Very high and stable transfert rate approx. 125 mo/s which is amazing for low consumption and low heat hard drives. The most stable hardware too, installing 4 of these together in a NAS box is wonderful as they still perform the same as they were in single enclosure, their self vibrations don't affect each others.

Cons: Low access time which is just normal considering the stability, the bandwidth and the low heat output those hard drives have.

Other Thoughts: The RED drives are very good, if you want drives more focused on performance get BLACK drives but 125 Mo/s on RED drives have plenty of bandwidth for any media playback or transfert/streaming process.

Did you find this review helpful? Yes No

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