Product Comparison: Western Digital My Book 4 TB vs Seagate Backup Plus 4 TB

Advertiser Disclosure

This site is a free online resource that strives to offer helpful content and comparison features to its visitors. Please be advised that the operator of this site accepts advertising compensation from certain companies that appear on the site, and such compensation impacts the location and order in which the companies (and/or their products) are presented, and in some cases may also impact the scoring that is assigned to them. The scoring that appears on this site is determined by the site operator in its sole discretion, and should NOT be relied upon for accuracy purposes. In fact, Company/product listings on this page DO NOT imply endorsement by the site operator. Except as expressly set forth in our Terms of Use, all representations and warranties regarding the information presented on this page are disclaimed. The information which appears on this site is subject to change at any time. More info

General Specifications
Western Digital
Backup Plus 4 TB
About the Product
Compact outside. Powerful inside. Store massive amounts of photos, videos, music and documents with My Book desktop storage.
The Seagate® Backup Plus portable drive offers the mobility of a portable with the high capacity of a desktop drive. Under a sleek metal design lies up to 5 TB of storage — twice the capacity of comparable 2.5-inch portable drives.
Key Specs
Storage Drive Type
4000 GB
4000 GB
What customers say about "Key Specs"
Western Digital My Book 4 TB Desktop Hard Drive - Black
  • The drive is incredibly easy to remove and has been installed in my Synology NAS, greatly increasing it's capacity.
  • Pretty good price for such a large capacity dual-drive which I use in Raid 1 mode so all my data is backed up within the drive.
  • Then there's capacity. The bigger the capacity the greater the discrepancy between stated and real capacity. .
  • Excellent storage capacity at 8tb, this is my second 8tb from Western Digital, I have a few 6tb and 4tb as well and have always found them totally reliable more so than seagate.
  • Capacity of the larger drives is good but design is terrible.
Seagate Backup Plus 4 TB Portable 2.5 Inch External Hard Drive
  • As the other reviews have described, this HDD is about capacity and not useful for a standard NAS.
  • I have a few external drives, WD 2.5" and WD 3.5" cloud drive, but I think for size and capacity so far I like this quite a lot.
  • My only concern in advance is with such a large capacity drive there is a lot to lose when this goes faulty, consider this if the device is to be primary storage, if this is level 2/3 then happy days people !
  • This drive is large in capacity, slim in size.
  • Needed a high capacity reliable drive to back up 3 computers, unfortunately, this had the capacity but not the reliability.
Size & Weight
6.7 in.
0.8 in.
1.9 in.
4.5 in.
5.5 in.
3.1 in.
35.2 oz.
8.7 oz.
What customers say about "Size & Weight"
Western Digital My Book 4 TB Desktop Hard Drive - Black
  • This new design makes a odd sound I hoping it's going to be as reliable as my others, my slight nervousness is the reason I've only given it 4 stars
  • Really well built and designed.
  • This new November 2016 version of the WD My Book is similar in size to the previous version, however the design of the enclosure is dramatically changed.
  • Surprisingly compact, fast and well designed.
  • Really not sure what Western Digital were thinking with this design. Capacity of the larger drives is good but design is terrible.
Seagate Backup Plus 4 TB Portable 2.5 Inch External Hard Drive
  • takes a while due to the size of the disk, but has worked well so far (I've had to do this twice). Generally speaking, it's fast and reliable.
  • The drive is very small, about iPod Classic size and weight.
  • Don’t be fooled to think that this is a 7.5mm drive, its not. Size is nearer to 20mm but for an external device this simply doesn’t matter.
  • But this is true for any size, style or make of HDD, external or internal. Spend an extra £7 on a decent case would be my advice.
  • The size is great no bigger than a paperback book, two front facing USB PORTS for easy access, works quietly when engaged on backing up my RAW files
OS Compatibility
Windows, Mac OS
Windows 10/8/7/Vista, Mac OS X 10.9 or higher
USB 3.0
USB 3.0
Backup Function
Data Protection
WD Backup, 256-bit AES hardware encryption, Password protection with hardware encryption
Easy to Use, Massive Capacity, WD Quality Inside and Out
Slim, metal design, 2 Months Free Adobe Creative Cloud Photography Plan
What customers say about "Features"
Western Digital My Book 4 TB Desktop Hard Drive - Black
  • It connected immediately to my iMac and file transfer was rapid. Although I use a Mac, the external drive needed to be formatted as a Windows disc to be read by my TV.
  • It's a nice looking unit that I have connected to my iMac for backups and to store my large collection of files.
  • I tried connecting via both USB A and C connectors and they work seamlessly on 2 different computers.
  • The Security program (v2.0.0.48) lets you put a password onto the device. This can be disabled for the machine it's setup on, so you do not have to keep entering it all the time.
  • Over time it got worse and now it can't stay connected for more than 15 mins before seemingly overheating and the fans running at full speed and disconnecting from PC.
Seagate Backup Plus 4 TB Portable 2.5 Inch External Hard Drive
  • A nice feature is the front panel USB ports for quick connection of temporary items, my Ecig battery in particular.
  • Drive was detected straight away on Windows 10 and there are various software features loaded onto the drive should you wish to use them.
  • At the time of purchase it was one of the cheapest drives on the market for the storage and features.
  • Great product good backup features
  • Poor sealing(glue slightly comming of lid seal)
Additional Accessories
Quick start guide, USB 3.0 cable, AC adapter
USB 3.0 cable
WD Backup and WD Security software
Seagate Dashboard software, NTFS driver for Mac
Power Supply
AC adapter
USB 5V/0.5A
Warranty / Certifications
Manufacturer Warranty
3 year(s)
3 year(s)
Other Information

Price History

Other reviews