Originally Posted by jfinke
No, no, no - nothing nearly that sophisticated. Each night at 12:05am Zimbra shuts down for a few minutes while /opt/zimbra is .tar'd off to our main file server for backup to tape.
The clone machine would need to have the backup restored, and Zimbra reinstalled before it could be run. So actually it's not really as easy as flipping a switch. But pretty close. If server A goes down, server B gets fired up, and the backup gets restored via webmin, and Zimbra re-installed via SSH.
I'm sure there's a better way to do this, but I don't mind having the system unavailable for a short while at night. Most of the accounts have 100mb quotas, to keep the backup from getting too huge.