I currently use an old MacBook Pro as a media server and Time Machine backup destination. I was hoping to replace it with an 8GB MyCloud EX2 Ultra. After using the MyCloud for a week, I'm going back to the MacBook Pro, and returning the MyCloud. Here is why:
1) It's much slower than I expected. For example, copying a 12 GB file to the MyCloud took 60 minutes. Copying the same file to the MacBook Pro took only 2 minutes and 15 seconds. The performance was so bad that I didn't believe it at first, and I repeated the test. The results were the same.
2) The MyCloud supports sharing media files as an iTunes library, so that other Apple devices can play that media. However, this only works for music files. I was hoping to share videos too, but that's not supported.
In short, if you're buying this device for use as a media server, keep in mind that it's 26 times slower than a 5 year old MacBook Pro server, and it can't share videos in its iTunes Library.