I'll be honest, if NFTS Write doesn't mean ability to write to a drive with NTFS as its FS, then I don't know what it is.. but if that is indeed what it means, might I suggest Windows Home Server?
Slightly bulky, yes. But it seems to do a lot. NAS, xbox media streaming and Windows machine backups to centralized place are just the features that I remember (because they appealed to me).
Hope that helps