WD My Cloud EX4 Personal Cloud Storage 16TB (4x4TB) Hard Drive, 2GHz, 512MB RAM, RAID Supported, 3 USB Ports

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Product Highlights

  • Holds 16TB
  • 3TB & Up

About WD My Cloud EX4

Built from the ground up with the quality and reliability customers have come to expect from WD and backed by a two-year warranty, My Cloud EX4 is a high-performance, four-bay NAS for the home or small office. It offers a robust all-metal enclosure, multiple RAID volumes, easy drive installation and a full suite of apps to give customers the power and flexibility to expand their NAS features.

Your options are endless
Choose the diskless enclosure with easy drive install and hot swap to effortlessly add up to four drives and grow as your needs expand. Or, choose a populated system that works right out of the box, featuring WD Red hard drives for ultimate compatibility in the unique 24x7 NAS operating environment.

Drive management and data protection at its best
You're armed with multiple options to secure your data from loss. Choose RAID 0, 1, 5, 10 or select from spanning and JBOD modes for even more options to manage your data.

Easy to manage
A powerful dashboard and LCD display means your system is always under your control. Monitor your drives, manage users and utilize energy-saving features. Email and mobile alerts keep you informed on My Cloud EX4 status.

Award-winning desktop and mobile apps
With WD's My Cloud mobile and desktop apps, your customers can upload, access and share their documents from anywhere. They can also conveniently transfer files from their public cloud service to the EX4 directly from the mobile app.

Powerful apps to customize their NAS
Featuring industry-leading apps, including aMule, Icecast, Joomla!, phpBB, phpMyAdmin and SqueezeCenter.

Advanced Serving Options
Integrated file server, FTP server, backup server and P2P download server.

WD My Cloud EX4 Features

  • Centralizing and organizing data in one secure location
  • Securing data from loss with customizable disk management and multiple RAID options
  • Backing up files automatically from all the PC and Mac computers on the network
  • Streaming media files to connected TVs, media players and gaming consoles
  • Quickly installing drives with ease
  • Saving, backing up and sharing stored content from anywhere
  • Accessing and saving files securely from any computer, tablet and smartphone
  • Uploading photos and videos directly to EX4 to free up space on mobile devices
  • Transferring files between public cloud accounts and EX4

WD My Cloud EX4 Specifications

Hard Drive
Drive Bays
4x 3.5" bay (Red drives recommended)
USB 3.0 x2
Gigabit Ethernet x2
Power Supply (DC in) x2
512 MB DDR3
2.0 GHz
Operating Temperature: 0° C to 35° C ( 32° F to 95° F)
Non-op Temperature: -40° C to 70° C (-40° F to 158° F)
AC input voltage (AC adapter): 100-240 VAC
AC input frequency: 50-60 Hz
Dimensions (HxLxW)
8.2 x 8.7 x 6.3" (209 x 220 x 160mm)
13.8 lbs (6.2kg)
Mfr #

WD My Cloud EX4 Reviews

Reviewed by 3 customers


Overall I like it!


from PA

I did my research before purchasing a NAS. I did not like the write speeds on this device, but after thinking about it and comparing prices/features I decided to go with the EX4. This weekend I'm setting it up and overall it is a great machine with a bunch of features. The only complaint I have so far is that I attached a 2TB hard drive via USB directly to the unit and the percentage complete shoots up to 96% in less than an hour. After waiting an hour for the 4% to complete I thought something was probably wrong so I cancelled the backup, rebooted and started it again. I should have done my research before rebooting it. After researching this problem I found out it is not stuck and it is not 96% complete. Hopefully this is the worst problem/quirk I run into. Otherwise so far so good!

(2 of 2 customers found this review helpful)




from Indianapolis  -  Power user

This machine never worked right from the time it was delivered. It rebuilt the RAID on every boot, and took four attempts to update the firmware. Finally, I got a SMART fail notice on one of the drives. When I contacted WD tech support, they wanted my credit card to quick ship (5 to 7 business days!) a new drive, otherwise I'd have to send in the bad one and wait for them to send me a new one. They refused to respond any quicker, citing "company rules". That made it easy; I'm sending it back immediately


Nice Backup Device


from pennsylvania  -  Power user

added this as a backup device. works as expected, no issues


Questions & Answers Powered by TurnTo®

Questions about this item:

Robert S  Can anyone on staff verify that this comes populated with 16T installed or if it's just a housing? Andrew R. said "I believe that this model includes 4x4TB HDD." I'd like to know with a little more certainty.
DANH N  I got this version with 16TB installed on board. There are 4 of 4TB WD HDDs red edition in there! about 3 USB ports, I see only 2 USB3 ports!
Shopper  Is this diskless or does this include the hard drives?
Andrew R  I believe that this model includes 4x4TB HDD.
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