I am in the process of planning a new server for home. It will be, most of the time a NAS server (for Time Machine backups and archiving of old, unused files). I decided to go with ZFS. But I would also like it to have VirtualBox running on it because every now and then I need to do a task on Windows, I'd like to run a test MusicBrainz server :) or just try out an OS.
I've considered FreeNAS or FreeBSD and they are strong candidates for the job. But I'd be more inclined towards Linux. Is there a lightweight Linux distribution with good support for ZFS and VirtualBox?