Just some thoughts 1. Simon is right about RAID-5 being unreliable. Either use RAID-6 or replication to a completely separate system to ensure you have enough redundancy 2. Look at having separate RAID-1 for OS AND cyrus meta data, and RAID-5+replication or RAID-6 for the data spool >From our testing, if you separate out the cyrus meta data (eg mailboxes.db, quota dbs, cyrus.* files, etc), it gets more IO than the email spool data, but takes only 1/20th the storage, so having high speed (eg SAS, 10k RPM drives, etc) for it is definitely worthwhile. Rob ---- 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
