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Item#: N82E16822236599

WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX

  • Storage for 1 to 8 bay NAS solutions
  • NASware 3.0
  • 3D Active Balance Plus

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Learn more about the Western Digital WD40EFRX

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details

Customer Reviews of the Western Digital WD40EFRX

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  • K. R.
  • 5/23/2016 2:36:16 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggslong-term update: 13 WD red 2TB / 4TB drives since 2012

This review is from: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX

Pros: - reliable
- lots o' space
-quiet

Cons: - one finally went bad

Other Thoughts: Can't find my original reviews, so figured I'd do a new one. Brief setup of NAS (all are WD Reds): 1 set of 5 2TB jbod (not on all of the time), 2 raid 10s with 4x4TB drives each (on 24/7). The jbod was set up first and a year or so later the raid 10s were added.

Finally, a drive went bad. Started throwing i/o errors, ran through WD SMART and reformatted, seemed ok, put back into raid and a day later started going crazy again. Luckily, this is one of the recent drives and it's still under WD warranty. Assuming all goes well with the warranty process, this is still a 5-egg review. All of the reds have been rock solid up until now, so getting one out of 13 bad isn't terrible. Not great, but I haven't seen any drive do better.

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  • Scott K.
  • 5/15/2016 3:48:39 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsExcellent drive

This review is from: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX

Pros: I have many of these red drives in various sizes running in several Drobo units. Two of the Drobos are used for video backup and one is used as a Plex server attached to an iMac. I have yet to have a failure in over 2 years. I'm hoping my good fortune continues.

Cons: None so far

Other Thoughts: Highly recommended. Would certainly buy again.

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  • John P.
  • 4/27/2016 3:45:57 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsI see RED!!!

This review is from: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX

Pros: Nothing but good things so far with WD Red's. They are fast and perfect in my Syn NAS.

Cons: None

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  • Robert M.
  • 4/27/2016 2:56:38 PM
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsNice Reliable NAS HDD

This review is from: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX

Pros: I own 5 other drives like this and they are all still working without issue. When they go on sale the price point is right where it should be. The 5 other devices have been running for almost 2 years now in my QNAP NAS shutting down nightly for about 6 hours and they always come back up without any problems.

Cons: They are a little noisy and produce a good amount of hear while under load. Make sure you have a good cooling fan if you are running multiple drives side by side as I am doing within my NAS.

Other Thoughts: I would recommend these drives to anyone in need of a hard working drive. I wish the price point would come down on these drives as I would like to purchase a couple of spares. That is about the only thing keeping me from giving this product 5 eggs.

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  • William S.
  • 4/27/2016 9:13:06 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat Product

This review is from: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX

Pros: Worked right out of the box. No problem as of yet.

Cons: None

Other Thoughts: Replaced the 2GB with 2 4GB in My Cloud. Installed as directed and all is good.

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5 out of 5 eggsGreat! Works great as my media drive.

This review is from: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX

Pros: No problems... it's a hard drive, it installs in the standard way. No problems setting things up. So far, very good performance.

Cons: None.

Other Thoughts: I'm not using it in a real NAS setting, just as the media drive on a network-accessible PC. It's working great in that setting, no problems, fast, reliable, etc.

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  • Luis C.
  • 4/26/2016 8:43:33 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWD Red 4TB hard disk

This review is from: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX

Pros: I don't notice it, that means it work great

Cons: no cons so far

Other Thoughts: I would recomend and I am planing to purchase another one

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  • Norman Y.
  • 4/26/2016 4:00:41 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat drive. Fast response in my NAS.

This review is from: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX

Pros: Easy to set up. Very reliable

Cons: None

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  • William B.
  • 4/26/2016 11:05:46 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat Hard Drive

This review is from: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX

Pros: Good price/value. Easy to set up. Runs cool. Runs quite. Good read/write performance.

Cons: None so far. Four of these drives in a QNAP NAS running continuously for six months. Not a single hiccup.

Other Thoughts: I would recommend to a friend and would definitely buy again.

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  • Anonymous
  • 4/26/2016 11:00:06 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat product

This review is from: WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX

Pros: Quiet, large capacity, reasonably priced.

Cons: None

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Item#: N82E16822236599
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