Top features:- Reliable storage space with simple installation- Superior drive management and a range of helpful apps- Streaming to multiple devices with ease- Private cloud network at home or work without extra feesReliable storage space Equip your home or small office with a flexible and powerful four bay Western Digital MyCloud Expert Series EX4100 NAS Enclosure. Installation is simple and you'll be able to add up to four drives, expanding along with your requirements. It's physically sturdy with an all-metal enclosure, and offers a complete set of apps to help you make the most of the drive's features. Superior drive management You'll have multiple options to save your data with the WD MyCloud EX4100, which lets you select RAID 0, 1, 5 or 10. Choose between spanning and JBOD modes for further data management options. It also includes dynamic WD My Cloud mobile and desktop apps that let you upload, access and share documents from anywhere.Streaming to multiple devicesUse your WD MyCloud to stream photos and videos to connected TVs, media players, gaming consoles and other DLNA/UPnP devices. The enclosure comes with a Twonky 7.2 and a DLNA-certified 1.5 media server plus an iTunes server for easy streaming from your music library.Files can be conveniently transferred from public cloud accounts without requiring a mobile app. The device also offers advanced serving options like an integrated file server, FTP server, backup server and P2P download server.Private cloud The drive lets you store all your content in one safe place on your home or office network, rather than a remote server. You won't be limited by obscure data locations, monthly fees or other limits. Enjoy high-speed interaction with your saved files, and attach a compatible USB drive to one of the two USB 3.0 ports to increase your private cloud storage space.