Storing uploaded files on NAS?

I’m a newbie with WordPress and I’ve been asked to make a content management system with it. We are going to use a clustered environment with two IIS servers to serve up the pages. What I would like to do is setup a Network Area Storage (NAS) for all the uploaded file content to go to. That way I can get around trying to keep files in sync on multiple web servers.

Is this possible and/or is there a plugin that can be used to keep files in sync on multiple servers if I can’t use a NAS?

Thanks…