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  • WD My Cloud EX4 Diskless: High-performance NAS, Ultimate reliability
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WD My Cloud EX4 Diskless: High-performance NAS, Ultimate reliability

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Price: $336.53 & FREE Shipping. Details
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Diskless
  • Reliable, high-performance, four-bay NAS for your home or small office
  • Diskless enclosure for ultimate flexibility or a populated system that works out of the box
  • User-selectable drive management with RAID 0, 1, 5, 10 as well as spanning and JBOD modes
  • Get up and running quickly with easy drive installation or buy a populated version that works right out of the box
  • Easy to manage with a powerful dashboard, LCD display and drive status alerts
  • Award-winning desktop and mobile apps
  • Industry-leading third-party apps, including aMule and Icecast
  • Advanced serving options including an integrated file server
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$336.53 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com in easy-to-open packaging. Gift-wrap available.

Frequently Bought Together

WD My Cloud EX4 Diskless: High-performance NAS, Ultimate reliability + WD Red 4TB NAS Hard Drive: 1 to 8-bay RAID Hard Drive: 3.5-inch SATA 6 Gb/s, IntelliPower, 64MB Cache WD40EFRX
Price for both: $502.25

Buy the selected items together

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Capacity: Diskless
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This item: WD My Cloud EX4 Diskless: High-performance NAS, Ultimate reliability
Customer Rating (160) (130) (219) (131)
Price $ 336.53 $ 271.99 $ 152.99 $ 219.99
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com Amazon.com Amazon.com Amazon.com
Hardware Interface ethernet ethernet ethernet ethernet
Hard Disk Size 0 TB 4 TB 0 TB 4 TB
Dimensions 8.21 inches x 8.67 inches x 6.3 inches 6.75 inches x 6.1 inches x 3.9 inches 6.75 inches x 6.1 inches x 3.9 inches 11.03 inches x 12.45 inches x 8.59 inches
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Technical Details

Capacity: Diskless
  • RAM: 0.5 GB
  • Hard Drive: 0 TB
  • Operating System: Windows 7 Windows 8 Windows XP Professional Mac OS X 10.6 Snow Leopard Mac OS X 10.7 Lion Mac OS X 10.8 Mountain Lion
  See more technical details

Product Details

Capacity: Diskless
Product Warranty: For warranty information about this product, please Click here [PDF]
  • Product Dimensions: 8.7 x 6.3 x 8.2 inches ; 7.2 pounds
  • Shipping Weight: 12.6 pounds (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S.
  • ASIN: B00G4JZ2T0
  • Item model number: WDBWWD0000NBK-NESN
  • Average Customer Review: 3.4 out of 5 stars  See all reviews (160 customer reviews)
  • Amazon Best Sellers Rank:
  • Product Warranty: For warranty information about this product, please Click here [PDF]
  • Date first available at Amazon.com: November 12, 2013

Product Description

Capacity: Diskless

My Cloud EX4 Personal Cloud Storage – Ultimate reliability from the 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, four-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.

Expandable storage
Choose the diskless enclosure to add up to four drives and grow as your needs expand. Or, choose a populated system that works right out of the box.

My Cloud EX4

Easy to set up, easy to manage
Effortlessly install drives or hot swap within five 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 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.

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 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, 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 customize your 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 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 backup to another My Cloud EX4, integrated cloud backup or local LAN/WAN backup. PC users, WD SmartWare Pro offers options for how, when and where you back up your files for up to ten computers. Mac users, utilize all the features of Apple Time Machine backup software to protect your data.

Increase your personal cloud capacity - Simply attach a compatible USB hard drive directly to one of the two USB 3.0 expansion ports on My Cloud EX4 and instantly expand your storage capacity.

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.

Ideal for

  • Centralizing and organizing your data in one secure location
  • Securing your data from loss with customizable 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

What's in the box
Four-bay personal cloud storage, Ethernet cable, power supply and cable, Quick Install Guide.

Compatibility
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.

Features at a glance

  • Four-bay enclosure, 0 – 16 TB
  • 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 & 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
  • Optimized for WD Red drives with WD's exclusive NASware technology

My Cloud EX4

For more great WD products, visit the Western Digital Store at Amazon.com


Customer Questions & Answers

Customer Reviews

We will be returning it and going with a competitors product.
Raymond M. Garrett
There are a lot of options that aren't clearly explained and the WD help site isn't as detailed as I'd like.
Pard
I am very happy so far, and excited to learn new uses for this device.
Paul Gregory

Most Helpful Customer Reviews

204 of 220 people found the following review helpful By Paul Gregory on November 27, 2013
Size Name: Diskless Verified Purchase
I have been researching SAN devices for a while. This one looked like a great option. I loaded (3) 1TB WD RED NAS drives into this and powered it on. It formatted the drives ( default RAID 5 ) and I had 1.9TB of space. So far so good.

I set up iSCSI with 1TB of the RAID 5 volume. Worked great. I Migrated a virtual machine from local storage on my esxi 5.1 box over to the iSCSI drive. Worked wonderfully. Went to bed. In the Morning the device informed me that the RAID was degraded. :(

I attempted to use the control panel to repair the RAID, it just got stuck in some loop. I was able to migrate the VM back onto the esxi box. However I couls not repair the RAID. So... I just started over. turned off machine, popped out the drives, moved them to different slots so that the NAS would reformatt/ re partition the drives. It acknowledged the drives, showed them as 1TB each. Unlike the first time, it didn't automagically start formatting. So I followed the directions online and changed the RAID to RAID 5. The web page control panel said it was in the process of partitioning the drives, please be patient. I was patient all night long, woke up in morning the page was stuck again. The LCD on front was just in it's default displays. Like it has no idea what was going on. Obviously the web page control panel was attached, as it knew the status of the drives... and it is hosted on the ip address of the WD device.

I have turned the machine off and given up until after Thanksgiving. I used thee WD RED NAS drives. I am very hopeful that I am just overlooking something really easy, as the instructions are sparse and FAQ's are limited.

I am not dissapointed yet, as I think this machine will be awesome once I get it up and running.
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Size Name: 8 TB Vine Customer Review of Free Product ( What's this? )
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.
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61 of 67 people found the following review helpful By Alexandre ACKERMANS on March 23, 2014
Size Name: 16 TB
I had high hopes for this product after installing 4 x 3Tb drives in Raid 5 and starting to transfer various files and backups that I kept on 4-5 external USB drives and Time machine backups. After just a week of use and filling approx 3 TB of data I noticed the web admin interface was very unresponsive . After repeated attempts to login and load I realized that a wdphotodbmerger process was consuming 70-80% of cpu trying to generate thumbnails for images across all my time machine backups and various sources. I attempted to disable Media player support to no avail. file transfer speeds had crawled to a stall (<1mb/sec). I left the process run for 3 days with no luck and had to create an ssh account to login and remove execute permissions on these non essential processes to recover access to my files. This is an operation I have had to do twice more - I don't know why my changes got overwritten.
Another issue was trying to use the Web and FTP file transfer processes and automatic backups.
A major issue was when I popped one of the drives out to test the RAID rebuild before I would start removing files from my sources. The Auto rebuild starting right away rebuilding the RAID which took 22 days to complete You read that right - this was for approx 3Tb of data. I would have expected 8-12 hours at most. 22 days is a very long window during which any other failure would have meant the loss of all data. this was not with a fresh, blank drive but from one of the 4 live drives.

I have contacted WD support about these, asking for some explicit solutions (firmware update that reduces the process priority or thumbnails, etc...) and got told that the product works as advertised. I cannot return it as I am past the 30 days.
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WD My Cloud EX4 Diskless: High-performance NAS, Ultimate reliability
This item: WD My Cloud EX4 Diskless: High-performance NAS, Ultimate reliability
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Ships from and sold by Amazon.com