This isn't a *nix vs MS thread. I'm capable in both, thanks. My network is a windows network and for the large part that's how it's staying. We do have *nix servers and we're happy with them.
So back on topic, @morganw I still don't understand what dedupe has to do with backups? Why would you dedupe the backup? One of the best reasons I can think of to use dedupe in the first place is shrinking backup size so it's already done.
Could you go into a *lot* more detail please?