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Western Digital WD Black WD4001FAEX 4TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive

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Learn more about the Western Digital WD4001FAEX

Quick Info


  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years

Customer Reviews of the Western Digital WD4001FAEX

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  • Kevin K.
  • 6/4/2014 12:53:28 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsHigh failure rate

Pros: Large drive, fast, reasonable cool

Cons: 4 of 6 drives failed within 3 months, one other within 6 months

Other Thoughts: Purchased these drives for the warranty, and paid accordingly. First drive worked well in NAS. Ordered a second one...wouldn't boot. It was a gift, so past the 30 day window. RMA to WD. Replacement drive DOA. RMA again. Replacement of the replacement failed SMART. RMA for the 4th drive, finally working (for 4 months so far). The initial drive, which prompted the subsequent purchase, started throwing SMART errors at 5 months. RMA to WD. This replacement just died after 3 months. So, of 5 drives I have had in my hands, only one works now. WD initally gave the RMA drives a 6 month warranty, instead of 5 years. I complained and they gave me back the 5 years. Frankly, if I have to RMA every few months, at my shipping cost, it isn't worth it anyway. I am going to RMA the current dead drive, but I won't be putting one of these back in any NAS that I need to use daily.

Manufacturer Response:

Greetings Lotek, please accept our apologies for any inconvenience you may have experienced with the WD Black drives. Given the application you are utilizing these drives for, you may be interested in working with the Red line of drives, which is intended for 24x7 operation in NAS enclosures with up to 5 bays.

Regardless of the reason the drive has failed, we stand behind our warranty and would like the chance to replace your device at no further cost to you, while providing you with a positive resolution to your overall experience. Please contact us by phone or email below and when you speak with our support staff be sure to reference this Newegg review along with your previous WD RMA number.
(800) 275-4932

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  • Andrew W.
  • 5/25/2014 11:08:59 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsIt worked for 6 months

Pros: when it worked it worked great

Cons: After the first six months of installing this drive I had barely used it. Only after six months i started using it and it then broke after some minor use. The first signs of it breaking was that it made a repetitive "clicking" sound, where after that I tried to use data from it, which caused my PC to utterly crash.

Other Thoughts: Now I can't even access the HDD in the BIOS. I am very frustrated and disappointed by the whole thing...

Manufacturer Response:

Greetings, please accept our apologies for any inconvenience you may have experienced. Our drives are rigorously tested to ensure they are in good working condition before they leave our warehouses. We understand your situation and will gladly replace your in-warranty drive directly, so we are able to investigate the cause relating to the products defect.

How to get an RMA (Return Merchandise Authorization) or replace a defective product under warranty

For additional assistance, please contact us at (800) 275-4932, or via our support website at:

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  • Peter L.
  • 4/14/2014 5:48:57 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWD4001FAEX

Pros: 1) Fast write and read.
2) Stable and no problems working with Stablebit Drivepool software

Cons: none

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  • Larry S.
  • 4/11/2014 9:24:33 AM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggs

Pros: what should of been a nice drive gave me SMART failure straight from the box so I have no Pros.

Cons: what should of been a nice drive gave me SMART failure straight from the box.

Manufacturer Response:

Dear Jugernagt, we regret hearing that you received a drive that is not working for you. All Western Digital products are tested and determined to meet WDs stringent quality standards before they are shipped to our retailers, and we will gladly replace your drive for you directly.
How to get an RMA (Return Merchandise Authorization) or replace a defective product under warranty

We can also be reached via phone or email at (800) 275-4932, or via our support website at:

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

  • Nathan K.
  • 3/23/2014 8:27:00 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggs*Update* Use for Archive storage only

Pros: -High capacity
-Simple Installation (What SATA isn't?)
-Standard Drive Height (IE: Will fit in any machine)
-Not Overly loud (You can tell when it spins up, but only then)
-It 'tests' fast, but I'm not sure it's as fast as they say it is.

Cons: -Not 1Tb/Platter = Slower access
-Drive likes to power down (conserve power) and/or not Spin-up until needed. (causes a delay when initially accessing of upto 5-8 seconds)

Other Thoughts: So I've had this a number of months now (enough to feel comfortable to have it house my archive data, music, etc) and as an Archive drive it's great. Lots of storage and I'll probably not Need another Archive drive for a while.

I also wanted to use it to house my music, video, and picture archives while allowing access to them without delay. Now there's always a slight spin-up delay when you first boot a disk (from cold boot), but that should be taken care of during the boot. This drive will remain completely spun-down until you first access it. This causes a huge (in relative computer time) delay between "do this" and it actually doing it. The delay is big in Windows, but in Linux it actually causes the OS to almost lock up as it tries to mount the disk. Linux throws an access error, but shortly afterwards I get the window I was waiting on. I'm not sure how Mac OSX handles it as I can't remember at this point if I've tested that yet. Yes, I have (more than) triple boot. ;-)

I haven't done video encoding yet using this drive as a source/destination, but I think I'm going to bypass that, just use my SSD for the encoding, and then throw the file on the 4Tb drive after I've done my editing.

In summary, use this for Archive/Backup purposes Only, not for an everyday use drive.

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  • Mark H.
  • 3/12/2014 7:54:13 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year

5 out of 5 eggsImpressive Storage Size, Fairly Low Cost

Pros: Worked right out of the box, 7200RPM disc speed, average transfer speed is over 100MB/s, 5 Year Warranty means that, unlike the other HDD manufacturers out there, WD is actually confident in their quality control and their product

Cons: None so far, but will update if there are any to report

Other Thoughts: Using this for storage, mainly movies and music, no stutter during play back of either. Could be cheaper, but then again, you DO get what you pay for in this world. Was a lifelong Seagate fan.....not anymore, WD has won me over

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  • Brandon M.
  • 3/12/2014 6:28:14 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat Drive

Pros: Great speed, price was great around the holidays got 10 of them for 189 each to help complete 50TB raid for my home theater setup. The drives were OEM but packed in the factory shipping box which had them secured very well. Generally this is what has lead people to having bad experiences since Newegg is know for bad shipping practices with Hard drives. I am guessing since i ordered 10 at a time, that kept them from being wrapped in bubble wrap and loosely shipped in boxes. I have had them up 99% of the time since 12/9 and have done checks on them weekly with no drive going bad or showing issues. Set up in raid 50 crystal mark showed sustained sequential 810MB writes 1085MB reads through lsi mega raid card... So far I have been pleased with black drives. I have owned many over the years and knock on wood have had great experiences with them compared to my luck with other drives. I definitely would buy again but waiting for price to come back down from the current listing.

Cons: They do run warm but i have plenty of cooling for them in my raid enclosure.

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  • Anonymous
  • 2/8/2014 7:16:10 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsExcellent

Pros: This drive is excellent! I was able to transfer all of my files over without any problems and it has performed at peak since I got it. The backwards compatibility from SATA III to SATA II/SATA I is great as my machine is older but I needed more space. Highly recommend!

Cons: No Cons as of yet, only had it about a month but I don't see any problems down the road.

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  • BRIAN B.
  • 2/2/2014 10:06:48 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsBeen Great

Pros: I have 12 Black edition drives (ranging from 1TB to 4TB) and have been very happy with all of them. My advice is to sector scan with the WD software when you first get it to validate the drive. Then for normal operation put a fan blowing on them and they will make you happy! I use these for data storage so the usage is on the lower end but purchased them for the warranty.

Cons: None so far.

Other Thoughts: Food for thought:

4,000,000,000 Bytes converts to 3.61TB within windows.

What happens when we hit 15 TB? Can we finally do away with this misleading marketing scale?

15,000,000,000 Bytes converts to 13.97TB

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  • Kevin A.
  • 1/23/2014 11:40:41 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

2 out of 5 eggsDouble Jeapordy for me

Pros: 4TB and 5 year warranty does say quite a bit, however WD offers TWO types of 4TB Black drives. This one has proved to be problematic for me.

Cons: It was loud from the start, and was slooow. As usual, when I get a new drive I run drive maintenance utilities on it. The utilities showed 'no 64mb cache' and rated at only Sata II instead of Sata III. Although I purchased this drive during the holiday shopping season in December, I could've returned it to Newegg, Iron Guarantee and within the standard refund/exchange period. I instead RMA'd it with Western Digital.

I chose to be 'billed' for them to send me a new 4TB drive and then I'd ship back the faulty 4TB drive. This process placed a $300 hold on my Credit Card and the shipping label purchased from Western Digital was under $7 dollars.

I received the replaced drive, ran my utilities and it runs... ok. That's it, merely 'ok'. However it isn't loud nor does it make the 'clunking' and 'groaning' noises the previous drive did. Strangely, it still is not registering any cache on the drive nor is it showing that it is Sata III 6g. It's performance is merely 'ok'. I won't buy again.

Other Thoughts: I'm stunned. I have a WD 640 Black that is just recently showing it's 'age'. I also have Seagate drives in several PC's that are running incredibly well over the last years I've owned them. I run the same Perfect Disk, Spinrite 6.0 and other utilities to maximize the health, performance and longevity of my drives. The 4TB WD Black is my 'poorest' preforming drive.

Manufacturer Response:

Dear Kgregory, we want to extend our sincere apologies for the issue you have experienced. There are many variables that could amount to a drive emitting unusual sounds when powered on. To test our drive’s health, we have our Data Lifeguard Diagnostics for Windows (WinDLG) utility. For information on how to use the WinDLG utility, please view the information provided by the following link.
How to tell if the noise or sound the drive is making is normal
How to test a drive for problems using Data Lifeguard Diagnostics for Windows

We'd like to follow-up with you on this. Please contact us at 1 (800) 275-4932, or via our support website at: and indicate your Newegg experience. We will gladly address all of your concerns for you.

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