From <a href="http://ceph.newdream.net/roadmap/" rel="nofollow">http://ceph.newdream.net/roadmap/</a><p>"We hope to have the system usable (for non-critical applications) by the end of 2009 in a single-mds configuration.  Even then, however, we would not recommend going without backups for any important data, or deploying in situations where availability is critical."<p>It looks interesting, but not ready for prime time. Anyone using this in the wild?