I have an existing Cyrus installation consisting of: (2) backend servers, each with 800GB of SAN storage, 1 cyrus partition (3) frontend servers (1) mupdate master Obviously, we are running Cyrus as a murder cluster and we really like that. I'm interested in upgrading both the servers and the storage for Cyrus, but I need some advice. I would like to add a *lot* more storage so that we can increase our email quotas (currently 200MB per user). It seems like the proper way to scale up is to split the Cyrus metadata off and use some large SATA drives for the message files. I was considering adding a shelf of 1TB SATA drives to our SAN. I could store the metadata on existing FC drives on the SAN, or just use internal disks on the servers. But then I started thinking about how I was going to backup all this new data... Our backup administrator isn't too excited about trying to backup 12TB of email data. What if we used Cyrus replication in combination with delayed expunge as a form of "backup"? We currently only keep 1 month of daily backups anyways... For those of you running large installations, how do you back them up? Thanks, Andy ---- 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