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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): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Customer Reviews of the Western Digital WD40EFRX

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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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  • Milton M.
  • 4/26/2016 10:53:19 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsCool and Quiet

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

Pros: Cool quiet operation.

Cons: None

Other Thoughts: Using two of these in RAID1 in Linksys LNR0208c.

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  • Anonymous
  • 4/26/2016 10:52:53 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggs4 of 4, All working great.

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

Pros: - High capacity
- Best drive for NAS environment

Cons: - None yet

Other Thoughts: - There were a lot of negative reviews involving a high frequency of failed drives, so I was skeptical, but went ahead with my order anyway. I ordered 4 x 4TB drives and all were in perfect working order. Did a burn in test, and then placed in NAS unit. They've been running 24/7 for the last couple months and haven't had a single problem.

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Item#: N82E16822236599
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