Need help with a NAS

Any NAS will work because they use an OS-agnostic language for file access. It's not like a USB drive where you have to worry about what filesystem it is formatted with.

A NAS might be the right solution for you, but think carefully about how you will use it, and more importantly, how you will back it up. A better solution might be to use the desktop you have now as a media server, and back that up, either to an external drive, or to a NAS.

 

Any Synology NAS would work great.

 

The only thing that I would keep in mind is that not all NAS's are compatible with Time Machine. If you're not worried about this, then you've got no problem. If you are, then I'd just make sure that the one you get is specifically compatible with Time Machine for your version of OS X.

I bought one a few months ago, only to have to return it because it was not compatible at all and their customer support, along with many forums, verified the incompatibility. The brand I bought, btw, was D-Link.