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  • WD My Cloud EX4 WDBWWD0160KBK-EESN 16TB 4 Bay Desktop NAS
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WD My Cloud EX4 WDBWWD0160KBK-EESN 16TB 4 Bay Desktop NAS

1 customer review

RRP: £829.36
Price: £786.82 FREE UK delivery.
You Save: £42.54 (5%)
Usually dispatched within 3 to 4 days.
Dispatched from and sold by DB Technology srl.
8 new from £731.80
  • Four-bay enclosure
  • Dual USB 3.0 expansion ports
  • Dual gigabit Ethernet
  • Processor: 2.0 GHz
  • System memory: 512 MB
See more product details

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£786.82 FREE UK delivery. Usually dispatched within 3 to 4 days. Dispatched from and sold by DB Technology srl.

Product Information

Technical Details
BrandWestern Digital
Item Weight6 Kg
Product Dimensions22 x 16 x 20.9 cm
Item model numberWDBWWD0160KBK-EESN
SeriesWDBWWD0160KBK MY Cloud EX4
Processor Count1
RAM Size0.5 GB
Hard Drive Size16 TB
Additional Information
Best Sellers Rank 65,532 in Computers (See top 100)
Shipping Weight9 Kg
Date First Available12 Nov. 2013

Product Description

Product Description

My Cloud EX4 Personal Cloud Storage

Ultimate Reliability from a Trusted Name in Storage

Built from the ground up with the quality and reliability you've come to expect from WD, My Cloud EX4 is a high-performance, 4-bay NAS for your home or small office. It offers a robust all-metal enclosure, multiple RAID volumes, easy drive installation and a full suite of apps for the power and flexibility to expand your NAS features.

My Cloud EX4 Product Update Available

The My Cloud EX4 Product Update has been available since May 27th, 2014. The Firmware release 1.03.39 contains:

  • Updated network connectivity reliability and large file transfer capability
  • Support for faster creation of the Storage Array and updated Dashboard experience

Featuring WD Red Drives
My Cloud EX4 works right out of the box with integrated WD Red hard drives for ultimate compatibility in the 24x7 NAS operating environment. Pre-set in RAID 5 mode for ultimate protection for your data from the start.

My Cloud EX4

Easy to Set-up, Easy to Manage
Effortlessly install drives or hot swap within 5 seconds with WD's advanced, all-metal enclosure design. WD's powerful dashboard means you are always in control.

My Cloud EX4

Extensive Data Protection
You're armed with multiple options to secure your data from loss. Choose RAID 1, 5, 10 or select from spanning and JBOD modes for even more options to manage your data.

My Cloud EX4
My Cloud EX4

Ultimate Reliability -- Built from the ground up with the quality and reliability you've come to expect from WD.

Your Options Are Endless -- Choose the diskless enclosure with easy drive install and hot swap to effortlessly add up to 4 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 24x7 NAS operating environment.

High-performance NAS -- Dual Ethernet and power supply ports; 512 MB memory and 2.0 GHz processor deliver reliable, blazing-fast performance for your home or small office.

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 utilise 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, you can upload, access and share your documents from anywhere. Conveniently transfer files from your public cloud service to the My Cloud EX4 directly from the mobile app.

Powerful Apps to Customise Your NAS -- Featuring apps, including aMule, Icecast, Joomla!, phpBB, phpMyAdmin and SqueezeCenter.

Advanced Serving Options -- Integrated file server, FTP server, back-up server and P2P torrent download server.

Stream Media to Your Connected Devices -- Stream videos and photos to connected TVs, media players, gaming consoles and other DLNA/UPnP devices. Features a Twonky 7.2 and a DLNA-certified 1.5 media server. And with My Cloud EX4's iTunes server, you can easily stream your music collection.

Back-up Your Way -- Protect your data with remote back-up to another My Cloud EX4, integrated cloud back-up or local LAN/WAN back-up. PC users, WD SmartWare Pro offers options for how, when and where you back-up your files for up to 10 computers. Mac users, utilise all the features of Apple Time Machine back-up software to protect your data.

Increase Your Personal Cloud Capacity -- Simply attach a compatible USB hard drive directly to 1 of the 2 USB 3.0 expansion ports on My Cloud EX4 and instantly expand your storage capacity.

My Cloud EX4

Integrated Energy-saving Features -- Save money on your energy bill with disk spin-down and scheduled power on/off.

Your Own Personal Cloud -- Unlike public clouds, My Cloud EX4 allows you to keep all your content in one safe place on your home or office network instead of a remote server. No mysterious location of your data. No monthly fees. No limits. Just blazing-fast performance for your high-speed digital life.

Advanced Features - iSCSI target, full-featured FTP services, link aggregation and failover support, jumbo frame support, iPv6 ready, UPS support (USB and network), real time resource monitor, volume encryption with boot-up password, SNMP and virtual volumes.

My Cloud EX4 personal cloud storage products work concurrently with multiple operating systems including Mac OS, Windows 8, iOS and Android with mobile apps.

At a Glance
  • 4-bay enclosure, 0-16TB
  • Dual Gigabit Ethernet
  • Dual USB 3.0 expansion ports
  • 2.0 GHz processor
  • 512 MB of system memory
  • PC/Mac compatible
  • RAID 0, 1, 5, 10; JBOD, spanning
  • Easy drive install and hot swap
  • Twonky 7.2 DLNA 1.5 and UPnP certified media server
  • Anywhere access from computers, tablets and smartphones with My Cloud desktop and mobile apps
  • A full suite of third-party apps
  • iTunes support
  • Dual power and network redundancy
  • Optimised for WD Red drives with WD's NASware technology
Ideal For
  • Centralising and organising your data in a secure location
  • Securing your data from loss with customisable disk management and multiple RAID options
  • Backing up files automatically from all the PC and Mac computers on your network
  • Streaming all your media files on your network
  • Quickly installing drives with ease
  • Saving, backing up and sharing your stored content from anywhere
  • Accessing and saving files securely from any computer, tablet and smartphone
  • Uploading photos and videos directly to your personal cloud to free up space on your mobile devices
  • Transferring files between your public cloud accounts and My Cloud EX4
  • Windows 8.1 or earlier, Windows 7, Windows Vista or Windows XP (SP 3) operating systems
  • Mac OS X Mavericks, Mountain Lion, Lion or Snow Leopard operating systems
  • DLNA/UPnP devices for streaming
  • Internet connection for remote access
Supported Browsers
  • Internet Explorer 8 or higher
  • Safari 6 or higher
  • Firefox 21 or higher
  • Google Chrome 27 or higher on supported Windows and Mac OS platforms

Note: Compatibility may vary depending on user's hardware configuration and operating system.

Box Contains

My Cloud EX4
Ethernet cable
Power supply and cable
Quick Install Guide

Customer Questions & Answers

Customer Reviews

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Most Helpful Customer Reviews

8 of 10 people found the following review helpful By Handswithenergy on 8 Jan. 2014
Verified Purchase
This product has caused me no end of trouble. The same as documented in the first Amazon review and in detail on the Western Digital forums. I love the quality and spec but the product is totally unreliable. I'm lucky if it works for 15 minutes before needing a reboot. During a copying the process suddenly stalls as the device disappears from the network. Generally only a full reboot will bring it back. Performance is also very slow, with Windows Explorer frequently white-screening for minutes at a time while it waits for a directory listing to come down. Logging in is also an issue, with its internal web server regularly giving black screens or 501 errors. This product had much promise but I can't remember wasting so much time with an item of technology. Had it worked reliably, I would have loved the functionality. Instead it needs many restarts each day and is totally unable to fulfil its promise. With other users reporting exactly the same experience, I feel I have no option but to return the product and request a refund. I will then go back to using a simpler but reliable set up of USB hard disks. Very disappointed.
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Most Helpful Customer Reviews on Amazon.com (beta)

Amazon.com: 1 review
Excellent User Interface & Features but SLOW (UPDATED late December 2014) 11 Dec. 2014
By Stephanie Sullivan - Published on Amazon.com
As of the December 16th firmware V1.05.30 the Dropbox Sync app is back and performance seems to have returned to pre-Aug update speeds (about 30MB/s in my testing for writing). This update took a long time to install on my EX4 after a reboot - FYI. More detail on this update at the end of this review. Read on...

As of the Aug 21, 2014 firmware V1.04.05 the same copy test I used in the initial review slowed by 2/3 from 30+MBs to 10MBs!!! Detail in the updates at the end. Read on...

The original review is below. Update detail at the end.

I've been using and installing several NAS servers lately, so I was excited to see what Western Digital had to offer with their "expert" EX4. I was both impressed and disappointed. It's well made, has a nice user interface but is slower than the competition. If you want more details on how it compares with the entry-level Buffalo LS420 and the professional Synology DS214 please read on.

The WD My Cloud EX4 8TB is a substantial piece of hardware. It comes with four 2TB WD NAS drives. I like these and in my prior testing the "NAS specific firmware" seems to make them a bit better in NAS applications than WD Black or even RE series drives. I've used them in Synology and FreeNAS based home-built devices with excellent results.

The EX4 unit itself weighs about 12 to 15 lbs with the drives installed. The hardware has a lot of professional features like dual LAN connections and dual power supply inputs. The power supply is external like with a laptop. Construction seems solid and the drives and trays can be replaced without tools. Pretty much standard for this class of device. The back also features 2 USB3 ports for external backup drives or adding USB based media.

The case is attractive and has a two-line LCD screen. I'm a sucker for LCD displays on servers. You can cycle through the server name, free space on the server, drive health, and ip address. I can't say it's been all that useful but I do like it. :-)

Be sure not to cover the sides - air flow is important and this was called out in the setup sheet and documentation.

When I set it up I was a bit nonplussed by the lack of a setup CD. My first impression was WD was really getting cheap. But I was wrong. The instructions sent me to a setup site where I found excellent setup instructions and a simple setup program. It had me up and going very quickly.

I was a bit taken aback by the setup program's EULA which started off in ALL CAPS about "BINDING ARBITRATION". Oy!

When the system is initialized it is configured as a RAID5. This means about 6TB usable space. RAID 5 is great for a single drive failure. It's not the fastest option but probably a good tradeoff for folks who want the most space with high integrity. The Buffalo LS420, by comparison comes configured as RAID0 - zero redundancy (what WERE they thinking??) and took hours to reconfigure to RAID1. When I changed the EX4 from RAID5 to RAID10 it was only a few minutes and easy-peasy. Beware that changing RAID like I did erases all data on the drives!!

The system appears to have - when initially turned on, to have upgraded its firmware. Maybe it really came with the latest firmware release from June 2014, but that would be a first in my experience. One feature you will not find was removed with the latest firmware: NFS. If you want to do native Linux/Unix sharing, too bad. To take features out of a product isn't usually a good thing, but it probably does not impact a large user population. One feature called out in the new firmware is an improvement in network performance. Given I'm not impressed with this I wonder what it was like before!

The web interface is very nice and usable. I found it easy to figure out and setup a new windows file share, add users and groups and manage access. The Synology DS214 interface is a close contender. I can't decide which I like the most.

A nice feature of the EX4 is the easy setup of iSCSI targets. A feature not often found on home/soho NAS. This is nice for virtual machines or creating a low-end Storage Area Network (SAN). iSCSI tends to perform much faster than Windows file sharing and that's important if running a virtual machine!

The cloud integration is very nice and access can be finely controlled via the GUI. I connected my iPhone to my private EX4 cloud and I was pleased with how well it worked. Excellent!

The Buffalo LS420 is distinguished by a lack of a "app ecosystem". The Synology DS214 has dozens of apps in a well developed ecosystem, The WD EX4 is in the middle with several apps like Joomla, Wordpress, a number of streaming solutions and cloud backup to Amazon S3 (why not the more affordable Amazon Glacier storage which is specifically for backup???). There is also a rather old version of phpMyAdmin for managing MySQL databases. It's a start and might be a big plus if it really builds out. With Linux under the hood there should be plenty of opportunity.

When accessing the windows shares and mapping drives there was no problem at all. It was again excellent in terms of compatibility and ease of use. I was accessing the device with Windows 7 Pro computers (a laptop and a Dell T7500 dual Xeon workstation). I also used it with a little XP system I am keeping for a specific application. All good.

The real test is performance. I compared the EX4 with a Buffalo LS420 2TB NAS and my home-built FreeNAS on a old pizza-box server with a Core-Duo and a couple of WD Red drives. I ran tests copying a 5.5GB folder of updates and some ISO files. So a fair mix of file sizes and I thought a fairly real-world large copy load. I did this on a relatively quiet network.

I used 4000 byte Jumbo packets with a switching infrastructure that supports those large frames. I set this in the EX4 settings. FreeNAS and the LS420 did NOT have Jumbo packets enabled. In my testing with Jumbo Packets turned off on the EX4 throughput dropped by about 20%. Being generous, I'm using the EX4 Jumbo Packet enabled measurements for comparison. Both of the computers I used were reading off SSD drives. A Samsung 840 EVO on my Precision laptop and a Crucial M500 on my Precision.T7500 workstation. Gigabit Ethernet everywhere.

With the RAID5 EX4 I got about 16MB/s write and about 40MB/s reading. I was not very impressed. I then reconfigured the EX4 into RAID10 - a combination of RAID1 and RAID0 for both speed and integrity but at a cost of 50% of the drive space. In RAID10 speed improved to 32MB/s writing and about 65MB/s reading. In RAID 10 iSCSI performance was more like 50MB's writing and about 70MB/s reading.

The RAID10 configured EX4 was about the same performance as the low-end Buffalo LS420 in RAID1 (2 drives, the Toshiba's that came with it). The LS420 has a much more basic web interface which feels kind of 2008. But when it came down to performance it matched the WD EX4 with Windows file sharing. The LS420 does not support iSCSI.

My FreeNAS on an old pizza box server ran about 50% faster writing - about 48MB/s and over 100MB/s reading with Windows file sharing. This is compared to the EX4 in RAID 10. The iSCSI performance was closer but FreeNAS was a bit quicker.

I don't have the Synology DS214 available for direct testing. It's with a client. It's performance was a bit faster than the FreeNAS when I ran some tests before client install. Noticeable but not dramatic. No Jumbo Packets.

Some conclusions:

The 4 drive "expert" EX4 from Western digital presents a nice hardware first impression. It's well packaged, easy to setup, has a nice getting started and education web site and resource. the web interface is nicely implemented and intuitive. Cloud functions are trivially easy to setup and use with support for Android and IOS devices (no windows phone - sorry!). It ranks highly on a usability index.

With a modest ecosystem of apps it appears to have potential. If WD grows this ecosystem that could be realized with a more complete ecosystem.

The last version of firmware for the EX4 (installed) specifically called out performance improvement as a fix. What was performance before the new firmware?

There is a lot to like about the WD EX4, but performance is disappointing. I do not know if it might have underpowered computing insides or the implementation just needs some tuning up? With the 8TB model performance can be increased by 50% by switching to RAID10 from the default RAID5 but you'll give up 2TB of usable space!

I think for applications where a lot of dependable storage is the goal and performance is secondary - like for backup storage or maybe a media streaming server it's probably a good choice. For home or soho use or casual file sharing/cloud.

For low end use the price/performance of the Buffalo LS420 is hard to beat for home NAS value with comparable performance. The DS214 is a great platform for more demanding business or advanced home use. FreeNAS is great for those comfortable with self-built/open source.

Bottom line: easy to setup and use, nice features rationally implemented. But, less than stellar file serving performance detracts from an otherwise 5 star performance. For this the EX4 gets 4 stars. I hope WD releases some firmware that will get performance more like Synology. Then I'll up this to 5 stars!

Hope this helps someone!

Update July 11, 2014
After living with the EX4 for a little while I wanted to have a folder sync with my DropBox. This is one of the features that's all over the WD EX4 literature - sync with DropBox. When I went to install the well publicized DropBox app it was nowhere to be found in the EX4's app selections. Of course I went to the WD downloads and nope, not there either. Google time... It seems the app has been pulled, perhaps since January 2014. There was a post saying it had been removed for maintenance and would be back soon. Maybe I think.

This brings several concerns to mind:
1) what happened to those who were using the app when it was pulled?
2) sync with public clouds was a plus with the EX4 that is now in question
3) with one of the last firmware updates they (as noted above) dropped NFS share support - too bad for Linux users! Is this what to expect with DropBox? I just don't know yet.

I don't think this is enough to drop my rating a full start, but I'm curious how WD will handle the DropBox app and how long it will take them to bring it back into service. WD has a skimpy app ecosystem compared to Synology or even the open source FreeNAS. Losing even one popular app will put a big dent into what's available.

Update: Aug. 27, 2014
Another firmware update: V1.04.05, but still no Dropbox Sync app. I think performance dropped by 2/3 to 10MBs or less compared to results with firmware 2 releases ago last spring. I was using the same fileset and copy used in earlier testing. I tried setting Jumbo Packets (the switching connecting the computer and WD EX4 supports this) and no improvement. CPU is bouncing between 50% and 100% during the transfer. The same EX4, gigabit network infrastructure, computer and ssd source drive: the firmware is the only variable, so I think performance worse with this release.

Addendum: I changed out my 8 port TRENDnet 8-Port Gigabit Switch, TEG-S80g with a new NETGEAR 8-Port Gigabit Switch, GS308 with no change in performance. Both support 9000 byte jumbo packets.

Update Dec. 28, 2014
On December 16th new firmware was released: V1.05.30. With this release the long (like 6+ months) missing the Dropbox Sync app is back! I have connected it to my dropbox and now have a local syncing copy of my dropbox on my EX4.

Performance seems to have returned to pre-Aug firmware speeds (about 30MB/s in my testing for writing).

This update took a long time to install on my EX4 after a reboot. After it came back up it was apparently still installing so beware. Sometime overnight it seems to have restarted and is operating normally this morning. FYI

The license agreement and app terms of use have changed so you may want to read about this when presented the acceptance dialogue after the update completes.

Here are the things that are updated in this firmware from the release notes:
- Updated device end user license agreement and app term of services.
- Resolved device not mounting the volume in degraded mode after power loss.
- Resolved encrypted volume unable to mount with original password after performing raid roaming.
- Resolved issue of instability with Remote Access connections.
- Resolved issue of some mobile apps displaying "Remote Access Disabled"
- Resolve screen refresh permission issue with multiple user accounts being open on the same computer.
- Resolved various translation and wording issues in multiple languages.
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