My Cloud Personal Cloud Storage NAS 4TB USB3

Centralized, dual-drive storage
for all your media
Store and organize all your family's photos, videos, music and important documents in one, double-safe place on your home network. 
 
Access from anywhere
Enjoy your photos, videos, music and more from anywhere on your PC, Mac, tablet or smartphone. With WD's free apps, your personal cloud is always with you.

Mirrored data protection
With Mirror Mode (RAID 1) as the default setting, the capacity is divided in half. Half of the capacity is used to store your data and the other half is used for a duplicate copy. In the unlikely event that one drive fails, your data is protected because it's duplicated on the other drive. 
 
Automatic file backup for all
your computers
Easily back up the files from all the PC and Mac computers in your home. PC users, WD SmartWare Pro offers options for how, when and where you back up your files. Mac users, utilize all the features of Apple Time Machine backup software to protect your data.

Remote backup
Protect your data with remote backup to another My Cloud Mirror, integrated cloud backup or local LAN/WAN backup.

Drive management and data protection
at its best
With multiple options to manage your data, it's easy to choose what's right for you. Use the default Mirror Mode (RAID 1) for twice the protection. Or choose RAID 0, spanning or JBOD modes for faster performance and maximum capacity.

Expand your tablet and phone storage
Upload photos and videos directly to your personal cloud from anywhere, freeing up valuable space on your smartphone and tablet.

Connect to Dropbox and more
Easily transfer files between your personal cloud, Dropbox and other public cloud accounts using WD's free My Cloud mobile app. 
 
Increase your personal cloud capacity
Simply attach a compatible USB 3.0 hard drive directly to one of the two USB expansion ports on the My Cloud Mirror drive and instantly expand your storage capacity.

Transfer and stream faster
Gigabit Ethernet and 1.2 GHz processor deliver faster file transfers and high-speed streaming.