It looks like the My Cloud is firmware on the hard drive, which can be used
as a network-attached storage device; nothing to install on your machines.
It's not likely free firmware, but who knows. I suppose you can access it as
a samba share from Nautilus? See this AskUbuntu thread. And, from a WD
video, it looks like you can configure the device from a web interface.
http://askubuntu.com/questions/469368/need-help-connecting-wd-my-cloud-nas-to-
I'm not recommending a device, just answering a "can I do it" question.
HTH,
Dave
14-04