Here is the thing: I have an external usb 3.0 harddisk drive that I use for backups and for Time Machine. My partner also has an apple configuration but doesn't do backups (yet). I want to use the external harddrive as our family cloud storage device, accessible from everywhere, easy to browse and share files with each other. The idea is that also both of us will use the HD as a Time Machine solution. I was already looking at Pogoplugs Office solution (for 5 users) but are there any other solutions that we could use? It must have one or two USB 3.0 ports. I think a real NAS would be overkill... Thanks!