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WD My Cloud Business Series EX4100 16TB 4-Bay NAS w/ WD Red Drives

WD My Cloud Business Series EX4100 16TB 4-Bay NAS w/ WD Red Drives
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  • My Cloud EX4100 Network Attached Storage

    Save all your valuable photos, videos, music and files on this ready-to-go, high-performance NAS solution for secure access to them anytime, from anywhere. Protect your content with multiple backup options, customize your NAS with a full suite of apps and enjoy peace of mind knowing that we've put our best in it, so you can put your best on it.
  • Centralize your media and content in one safe, organized place

    Whether you're a creative hobbyist, creative professional or have an impressive media collection, you will undoubtedly have loads of digital content to store. With My Cloud Expert Series NAS, you can easily centralize and protect your valuable content from all the PC and Mac computers on your network. Plus, access it anytime, from anywhere with tablets and smartphones.
  • Get power that keeps up with your passion

    Powered by a strong Marvell® ARMADA® 388 1.6 GHz dual-core processor, My Cloud EX4100 gives you ultra-fast transfer speeds of 116 MB/s upload and 116 MB/s download to keep up with your high-performance needs. Now you can upload more content simultaneously, stream your HD media more smoothly, and enjoy your creative life with ease.

    Gigabit Ethernet Testing environment based on Dell Optiplex 9020 (SFF)  with Intel Core i7, 8GB RAM running Windows 8.1 Pro using an Intel X540-T2 10G Ethernet connection. Performance may vary based on different hardware / software configurations as well as network load during testing.

  • Stream like a pro

    With the built-in Twonky DLNA-certified media server, you can seamlessly stream all your HD videos, photos and music stored on your My Cloud Expert Series NAS to media players, Smart TVs, gaming consoles and other DLNA-certified devices on your network. It's an easy way to enjoy your media collection on the biggest screen in your house.
  • Safeguard your content with comprehensive data protection

    My Cloud EX4100 keeps your irreplaceable photos, videos and files safe with multiple data protection options to secure your content from unexpected loss. Protect all the PC and Mac computers on your network using local, remote or cloud backup. Multiple RAID configurations and volume encryption add even more protection and security for all your files.
  • Be up and running in minutes

    My Cloud EX4100 comes preconfigured to get you set up and on your way without any hassle. The intuitive dashboard guides you through the process of setting up users and shares, customizing system features and monitoring your storage. And with a toolless and trayless drive bay design, drive installation and hot swap is effortless.
  • Built-in reliability for added peace of mind

    My Cloud Expert Series pre-configured NAS come populated with WD Red NAS hard drives. Ultra-reliable and purposely built for NAS systems, WD Red drives improve performance and thrive in 24x7 environments.

    WD's exclusive NASware™ technology further optimizes WD Red for the NAS environment. From vibration compensation, optimized power usage and protecting your content in the event of a power loss or disruption, the firmware is designed to give you improved reliability and system performance.

  • Get enhanced media streaming and network redundancy

    Dual Gigabit Ethernet ports for link aggregation enhances network performance giving you the best possible HD media streaming experience. It also provides for network redundancy should one of your network connections fail.
  • A power supply with a backup plan

    My Cloud EX4100 comes equipped with dual power ports offering you the option of adding a second external power supply that will take over should the first power supply fail, giving you uninterrupted access to your content.
  • Plex Media Server

    Plex organizes all of your video, movie, TV show, music, and photo collections so you can stream them to all of your screens.
  • My Cloud OS - content management made simple

    WD's My Cloud OS delivers a suite of tools and apps that empower you to easily take control of the content that matters to you most. The intuitive, easy-to-use dashboard makes set up, managing storage and personalizing your NAS effortless. Our award-winning My Cloud app allows you to securely access and share your files from anywhere with computers, tablets and smartphones. And with popular third-party apps available for download, you are enabled to customize your NAS to best fit your needs.
  • Automatically copy your external USB with the touch of a button

    With the built-in, one-touch copy button conveniently located on the front of the NAS, you can automatically copy all the photos, videos and music you have stored on an external USB or camera to the My Cloud EX4100, keeping all your media and files in one safe, central location.
  • Save on energy automatically

    My Cloud EX4100 comes equipped with drive sleep mode, LCD and LED on/off and power scheduling capabilities to save power and runtime energy.
  • Professional-grade features

    • iSCSI target and initiator
    • Integrated FTP and WebDAV server
    • Integrated SSH Secure Shell
    • Link aggregation and network redundancy
    • Jumbo frame support
    • IPv4 and IPv6
    • UPS support (USB and network)
    • Real-time resource monitor
    • SNMP
    • Microsoft Active Directory support
    • Energy-saving options

My Cloud OS

  • Wherever your journey takes you, My Cloud is there

    With its robust software ecosystem, My Cloud OS 3 gives you anytime access to your stored content at home. New features, improved functionality and simple interface design deliver easy file sharing, access management and a streamlined photo gallery view on any PC, Mac, iOS or Android device.
  • Achieve digital harmony with WD Sync

    Your favorite content is backed up across all your computers and your My Cloud unit, so your files are always up to date and accessible from all your devices. Photos and videos can be backed up straight from your tablets and smartphones, too – all in full resolution.
  • Share one image…or a thousand

    No one can see the content stored on your My Cloud device but you. Want to share it? Just send a direct link for as many (or as few) files to share, only to the people you choose.
  • There’s a reason the My Cloud app is award-winning

    Incredibly intuitive and easy to use, the updated app is designed to help you quickly reach and organize your digital life. Simply download to any iOS or Android smartphone or tablet, and away you go.
  • Mobilize your media with WD’s My Cloud mobile app

    From anywhere in the world, you are always connected to your own personal cloud. Save valuable space on your mobile devices with easy photo and video uploads directly to your My Cloud, then securely access and share your memories from anywhere.
  • The new Media View experience

    Media View delivers a more engaging way to view and search your photos, music and video content. Simply select a media icon to quickly view all of that content, or select to view by date or album.
  • Take your music on the road

    With the My Cloud mobile app, you are always plugged in to your favorite artists, playlists and songs. Centralize your entire music library on your My Cloud at home and access it when you’re on the go. Select your favorite playlist and while you’re listening, search for your next jam so you don’t skip a beat.
  • Stay connected to your personal cloud with your PC and Mac computers

    WD’s My Cloud desktop app keeps all your PC or Mac computers connected to your personal cloud, no matter where you are. From the application, you can easily drag and drop to transfer, manage your files and share links to specific files or folders via email.
  • Mobile Requirements:

    • Personal cloud access with the My Cloud app requires a My Cloud, My Cloud Mirror, My Book Live, My Book Live Duo or My Net N900 Central with the most recent firmware.
    • Access to cloud services requires the My Cloud app and an active Dropbox, Google Drive or OneDrive account.
    • iOS iPhone or iPad running versions 7.0 or later software.
    • Android smartphone or tablet running versions 4.0 or later software.

    Desktop Requirements:

    • Personal cloud access with the My Cloud app requires a My Cloud, My Cloud Mirror, My Book Live, My Book Live Duo or My Net N900 Central with the most recent firmware.
    • Access to cloud services requires the My Cloud app.
    • Mac OS X Mountain Lion version 10.8, Lion version 10.7 and Snow Leopard version 10.6 or higher.
    • Windows 8, Windows 7, Windows Vista, Windows XP (SP 3) 32 or 64 bit.


  • Centralize your personal media collection

    Store and protect all the videos, photos and music from your PC and Mac computer in one safe place in your home.
  • Keep your media beautifully organized

    Plex organizes your entire media collection with one simple interface and keeps it beautiful by adding descriptions, plot summaries, posters and album covers.
  • Stream to your favorite screens

    Stream media stored on your My Cloud NAS to all your devices, such as your PC and Mac computers, smartphones, tablets, Smart TV and more.

General Information

Centralize your Media on a Safe Organized Place when Using the WD My Cloud EX4100

Save all your valuable photos, videos, music and files on this ready-to-go, high-performance NAS solution for secure access to them from anywhere with an internet connection.

More from the Manufacturer

Number of Hard Drives Supported:4
Number of Hard Drives Installed:4
Total Hard Drive Capacity Installed:16 TB
Hard Drive Configuration:4 x 4TB

Processor & Chipset
Processor Manufacturer:Marvell
Processor Type:ARMADA
Processor Model:388
Processor Core:Dual-core (2 Core)
Processor Speed:1.60 GHz

Standard Memory:2 GB
Memory Technology:DDR3 SDRAM

Network & Communication
Ethernet Technology:Gigabit Ethernet

I/O Expansions
Number of Total Expansion Bays:4

Controller Type:Serial ATA/600
RAID Supported:Yes
RAID Levels:0, 1, 5, 10, JBOD

Number of USB 3.0 Ports:2
Network (RJ-45):Yes

Operating System:My Cloud OS

Management & Protocols

Physical Characteristics
Product Color:Black
Form Factor:Desktop
Weight (Approximate):13.51 lb

Package Contents:
  • My Cloud Expert Series 4-Bay Pre-configured NAS with Dual-core Processor
  • Ethernet Cable
  • Power Supply and Cable
  • Quick Install Guide
Environmentally Friendly:Yes
Environmental Certification:RoHS
Country of Origin:Thailand

Limited Warranty:3 Year

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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Shipping Restrictions
  • This item cannot be shipped to PO Boxes.
  • This item can be shipped only within the U.S.

  • UPC: 718037832807 
  • Mfr's Part #: WDBWZE0160KBK-NESN