If you're looking for a fileserver, take a serious look at OmniOS, which is under-appreciated.
Solaris ZFS, in-kernel SMB server (and NFS of course), and natively supports NT-style ACLs as opposed to the Samba UID/GID mapping kludge. Ethan Azariah wrote: > i want a network fileserver so there seems little point going > through openbsd. i might as well serve the files straight from freebsd > or from plan 9.