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Western Digital

WD 4TB My Book Duo Desktop RAID External Hard Drive, USB 3.1 - WDBFBE0040JBK-NESN

    • Based on 1,447 reviews
Condition: New
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Availability: Only 2 left in stock, order soon!
Fulfilled by CorteseInc
Arrives Apr 25 – Apr 26
Order within 8 hours and 58 minutes
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Capacity: 4TB


Style: Dual Drive


Features

  • Massive capacity storage with auto and system backup
  • RAID-0 ready out of the box
  • RAID optimized WD Red drives
  • USB 3.1 Gen 1-ready, USB 3.0 compatibility
  • 3-year manufacturer's limited warranty

Description

The My Book Duo drive has massive capacity ideal for storing photos, videos, documents and music. It’s super-fast with up to 360MB/s (2) sequential read speeds thanks to WD Red drives inside and use of the USB Type-C port. That USB Type-C port with all cables included makes it universally compatible (supports USB 3.1 Gen 1/3.0/2.0). Two USB Type-A hub ports deliver flexibility for additional accessories. |(2) As used for sequential read transfer rate, megabyte per second (MB/s) = one million bytes per second.


Hard Drive: ‎4 TB Desktop


Number of USB 2.0 Ports: ‎1


Brand: ‎Western Digital


Series: ‎My Book Duo


Item model number: ‎WDBFBE0040JBK-NESN


Item Weight: ‎5.05 pounds


Product Dimensions: ‎6.3 x 3.94 x 7.09 inches


Item Dimensions LxWxH: ‎6.3 x 3.94 x 7.09 inches


Color: ‎Black


Flash Memory Size: ‎4


Hard Drive Interface: ‎USB 3.1


Manufacturer: ‎Western Digital Technologies, Inc.


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎August 22, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Apr 25 – Apr 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • fit for purpose with time machine (consumer DR simulated)
bought this for time machine backups, (which I'm new to) and after reading the reviews i was second-guessing, but then i read pretty much all other device reviews, found they're all avg at best, and decided to stick with WD. tl;dr: glad i did! the device works pretty close to as expected, and is fit for purpose. first, the software. really cool that they have a customized acronis true image version available for free download, but it's only for windows, so i haven't tested as i wanted to see if i could manage the device entirely from macOS after seeing that the management software supports both; which was honestly a surprise! unfortunately, while both the WD Drive Utilities and WD Discovery are buggy, I found that the former works more reliably and is far less intrusive IMO. The latter I found will continually startup at boot/1st-login despite telling it not to. Further, the WD Discovery makes me a bit nervous with the "expose your files to the public internet" cloud mode. I prefer to not even go down that path of potential attack surface. I very much like the fact that there is a separate firmware updater that despite my drive coming with the latest version seemed to allow me to re-flash; so i did. however, tbh, i'm not sure if it actually did anything; as either it's the fastest firmware flash i've ever seen or it didn't _actually_ do it. finally, in the software category, i didn't play with WD Security as despite WD's reputation, recent research has shown that disk manufacturers are not to be trusted when it comes to crypto; so i'm sticking with OS/software level encryption...at least for the moment. the drive comes configured in raid-0, so of course i immediately reconfigured for raid-1. this is where both of the management utilities continually crashed. however, both did properly configure the device; as confirmed by multiple reconfigurations, re-flashing, re-wiping, and testing connectivity and flag files on disk. again, i decided to stick with the WD Drive Utilities from here on out so YMMV if you decide to go with WD Discovery. at this point i started the backup process which took only ~4h for 725GB (encrypted mbp 1TB flash storage source) w/o crypto; not as bad as i was expecting tbh...especially given the 5400RPM speeds of the red disks included. I then simulated a disk failure by yanking one of the disks, and attempting to connect via sata/ide convertor directly to a macos vm (via usb) to see if i could read the contents. unfortunately, the disk was in an "unrecognized" format for macos; which is SOP IME when dealing w/ hardware raid controllers. leaving that disk out, i was able to recover files successfully on both my original macOS system as well as a macOS vm using the device. however, after plugging the removed drive back in i found i had to rebuild the array :( not a big deal for a raid-1 or JBOD configuration, but BEWARE IF YOU'RE RUNNING RAID-0. I did confirm prior to this testing that just removing a drive and replacing it WITHOUT connecting/reading/writing in another device did NOT force a rebuild. YMMV! moreover, i was debating between this and the 4 drive configuration with the open bays for quick swapping drives, but i actually prefer this device since it's trivial to pop the top of the device (plastic "tool" included, but a regular screwdriver or your pocket knife will work just as well) reveals 2 "just as quick" bays (with better dust protection :) finally, we come to encrypted time machine backups. apparently apple just encrypts the drive outright, and locks it w/ the passphrase; which is a reasonable design decision IMO. however, i found that after 3 days my 3TB (again, raid-1 config) was only ~30% which translates to a ~10d encryption process. i actually tried this before the previous paragraph's test (hence my pulling of the drives w/o the convertor test) and found that macos does reliably prompt for the backup passphrase. however, this report lacks the final, full encrypted testing as i went for the unencrypted full disk backup+consumer DR testing first; opting to add in the encryption after the fact. given most consumers' risk/threat profiles tho i doubt this will be a concern; especially since there are several recent articles regarding not encrypting backups at all; given the added risk WRT use-cases. in conclusion, i give this product 4 stars out of 5 for generally working as expected, being fit for purpose, but software crashing on macOS (presumably JustWorksTM on windows). having to do it all over again, i'd probably compute the 12 or 20TB configuration's storage price vs the 6TB i bought and compare it to the raw drive price, (the hw raid controller should effectively be free :) but overall i'm happy with this purchase and the price point. i will update further if future testing provides any significant results/issues especially as i plan on picking up a single replacement 3TB red drive for post crypto DR scenario testing as well. HTH ... show more
Reviewed in the United States 🇺🇸 on November 20, 2019 by enkaskal
    • Small, pretty quiet, fast enough
I had a Drobo for a few years. I felt safe in the knowledge that if a drive failed that I wouldn't lose any data. I do regular backups but losing your main drive is still a pain. So, did a drive fail? Nope. The whole Drobo did. Drobo's solution? Buy a new one and recover your data. This convinced me that RAID is just an expensive, over-complicated mess. When the Drobo died I didn't lose any data but I decided not to bother with that again. This drive was 1/3rd the price of an EMPTY Drobo. I'm still doing regular backups so my risk is exactly the same as it was before. If it dies, I'll buy another one. I can do it several times before I've spent as much as the Drobo cost. This drive (10TB) is much smaller physically than I expected it to be. It's not much bigger than the Intel NUC that it's connected to. It's pretty quiet except for vibrations that were getting amplified by the desk I have it on. I solved this by putting some felt circles on each of the rubber feet to isolate it from the desk. I occasionally hear chatter when it's working hard but most of the time you can't hear anything. I'm using the drive as my NAS connected to an Intel NUC which serves up network shares. There's very little activity on it except when I'm backing up my other computers to it or when it's doing it's own maintenance tasks (backups, etc). The speed is fine since the limiting factor for transfers is the network it's attached to. I'm only using about 35% of the capacity at the moment so hopefully it lasts a long time. ... show more
Reviewed in the United States 🇺🇸 on February 8, 2020 by Andrew H. Mcdonald
    • The Best External Hard Drive
Capacity: 3TB Style: Single Drive
A friend had recommended this brand to me, and it was the best suggestion ever! The large amount of space for the price cannot be beat! I even ordered another one!
Reviewed in the United States 🇺🇸 on August 10, 2022 by Ricardo Mendez
    • Look up the 8TB hard drive (WD80EZZX)
Capacity: 4TB Style: Dual Drive
Do the homework before you buy, there is a WORLD of difference between this one, and the competition that sells for $20 less. Good news first. If you were to buy this unit, and just throw away the case and save the hard drive - you would SAVE about ~$100 from buying the bare hard drive alone. Yes, read that again, WD is GIFTING you a Helium filled, NAS quality (as in Enterprise grade) 8TB hard drive that retails for nearly $300 for a bare drive, for ~$190. Don't take my word for it, do a search for the WD80EZZX and see what you find - that's what they are sticking in this black box. The competition, is sticking an inferior technology, pretty unreliable hard drive (Sept 1-19th reviews shows 12 out of 62 reviews with 1 star; that's 20% FAILURE) being stuck inside their box, and you are saving $20. Now, ask yourself - would you rather save $20 and run a 20% chance of losing your data? Are your taxes, your pictures, movies, games, homework, business receipts and emails worth the extra $20? Would coming home to find that years worth of data is irretrievably gone make you more angry, than saving $20 makes you happy? Seriously, this is your money, not mine. My use is simple - this is a backup device for my Mac. This drive will typically come formatted with exFAT so it will work for both Windows and Mac. I never trust anything that comes from anyone, because I don't know nor do I trust any manufacturer. So, I ALWAYS format every storage device; this will be formatted for my Mac; so I will KNOW that the drives have no malware, no Trojans, nothing on the drive that I didn't put on there myself. I will then use it for a backup device. If I were to use it for my Windows machine, I would format it to NTFS and install my Windows Backup software, but this is my decision; you are (naturally) free do do what you want. I just suggest that you strongly consider doing something similar. What good is having a backup device, if the backup device is unreliable? Would you trust a seatbelt that was defective? Would you use a defective parachute? Why would anyone use a defective hard drive in a backup device? The choice is yours, I humbly suggest you chose wisely. ... show more
Reviewed in the United States 🇺🇸 on September 21, 2017 by J. Halvorson

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