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


Customer Reviews of the Western Digital WD40EFRX

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Showing 143 of 143 reviews - Clear Filters

  • Theo C.
  • 10/22/2014 12:31:00 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

1 out of 5 eggsCrashed after 4 months

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

Pros: None

Cons: Crashed after 4 months of regular NAS use.

Did you find this review helpful? Yes No

  • Theo C.
  • 10/21/2014 8:36:10 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

2 out of 5 eggsDead after 4 months

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

Pros: Decent price for the size

Cons: Drive failed after 4 months of use in my Synology NAS.

Did you find this review helpful? Yes No

  • Andre B.
  • 10/20/2014 6:04:46 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsExcellent Stability

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

Pros: Exceptional Speed and performance in Raid0

Cons: none

Other Thoughts: Im running two of the 4TB drives in Raid0 to supply my media center with fast space. I stream bluray off of these disks and the load times are easily acceptable to me now.

Did you find this review helpful? Yes No

  • Andrew C.
  • 10/16/2014 6:52:44 PM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsSave Yourself The Cost of Return Shipping

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

Pros: Allows you to gain experience in writing poor reviews.

Creates jobs! ...In the shipping industry. This item will require multiple shipments as opposed to the usual one. Back and forth and back again.

Cons: RMA'd the first drive, failed the Extended Lifeguard test for too many bad sectors. Received the replacement drive and it failed for the same reason. Attempted to write zeros to the entire drive, but that only revealed just how many bad sectors there were.

Other Thoughts: I really wanted this one to work. I've had generally good experiences with WD drives but I've had enough now. On to the next manufacturer.

Did you find this review helpful? Yes No

  • John K.
  • 9/30/2014 10:15:31 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggsBad series - DO NOT USE!!

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

Pros: Price for the size

Cons: Unreliable

First one was DOA and was RMA'd. Second one worked for about 20 minutes before going offline during my first test backup run. Shut it down and brought it back up and now the drive is only reporting half its size (only showing 1.8TB usable, BIOS of RAID Card does show drive as 4TB).

Ran WD Lifeguard tools - Drive failed quick test with error - Too many bad sectors. Tried a different enclosure and different interfaces (USB, Firewire, eSATA) Will be returning for refund at this point.

Other Thoughts: I'm willing to overlook a DOA drive, they happen. But two in a row? These drives were going to be used in an external NAS enclosure that would have been backing up one of my customer's systems. I am glad I decided to bench test the drives first before deploying them and finding that they are not reliable.

I have been using WD Black, Raptor, and RE drives for a long time and had high hopes for the Red line being a good fit for backup and NAS solutions for my customers. After my testing though, I have lost all trust in the WD Red line and will no longer be using them in any of the backup solutions I use.

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

  • Andrew C.
  • 9/28/2014 9:00:05 AM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsBad Drive

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

Pros: Been meaning to upgrade four drives in NAS for some time now. These 4gb drives seemed like the ideal solution.

Cons: Failed WD Lifeguard test upon arrival. I read the reviews and knew that these drives had a high rate of failure. Surely this wouldn't happen to me! It did. When I built my NAS, only one of the four 1tb Green drives I bought was bad. The second time around, WD is 0-1. A 60% success rate is pretty awful.

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

  • Adam M.
  • 9/26/2014 8:05:59 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsGood drives, but with all the negative reviews ....

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

Pros: Good Drives, contrary to the many reviews which site drive failure, they work well so far, they are currently serving as media storage in my home network, External USB enclosure, but that may change soon. They aren't remarkably fast, but I don't expect Warp 9 out of a rowboat.

Cons: None ... Yet .... I've noticed a lot of people have complained about drive failure rates, and what I do find worrisome is that most of the failures seem to occur after the 3 month "honeymoon." Rest assured that if that happens I'll be back here with a flamethrower to flame WD.

Other Thoughts: I like Traffic Lights.....

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

  • Brett H.
  • 9/25/2014 12:56:58 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsI'm happy with it

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

Pros: Good price, long warranty, red drives are the future of mass storage. I'm not running this in raid yet, but when I fill up my 4TB I will buy another and put them in RAID. I like that it's already designed for that even though that's not how I'm using it yet

Cons: non so far,

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

  • 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.

6 out of 16 people found this review helpful. Did you? Yes No

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