I just thought to report back to the list, that ZFS is working out well. I asked a while ago about other's opinions, and got all thumbs up.
We deployed a setup with Sun T2000 running Solaris 10u3 (11/06) and a pair of Sun 3510FC arrays mirroring in a hybrid HA RAID 5+1+0 setup that I can describe further if anyone cares. We currently have 27,323 accounts on it, and it is performing very well, with atime=off and compression=on. We have only recently migrated a lot of this existing userbase over using an imapsync method, so we are not as yet seeing so much of space/performance benefits of single instance store. The snapshot feature lets us keep 14 days worth in the pool and beyond that we'd go to backups. Actually doing NetBackup of a Cyrus partition is incredibly slow however, so we are looking at replication to another server for disaster recovery. Then perhaps we can dispense with tapes entirely. ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
