Back up like an expert with rsync. What's so great about rsync?
First, it's designed to speed up file transfer by copying the differences between two files rather than copying an entire file every time. For example, when I'm writing this article, I can make a copy via rsync now and then another copy later. The second (and third, fourth, fifth, etc.) time I copy the file, rsync copies the differences only. That takes far less time, which is especially important when you're doing something like copying a whole directory offsite for daily backup.
Mirror Your Web Site With rsync On Fedora 10. Version 1.0 Author: Falko Timme <ft [at] falkotimme [dot] com> Last edited 01/26/2009 This tutorial shows how you can mirror your web site from your main web server to a backup server (both running Fedora 10) that can take over if the main server fails.
We use the tool rsync for this, and we make it run through a cron job that checks every x minutes if there is something to update on the mirror. Corporation: Home Page.