Joomla! Pack is a component that effortlessly backs up your whole site (database and files) into a single .zip, .tar or tar.gz archive. The backup is loaded with a modified version of the Joomla! installer so you can restore it afterwards on any server. The backup and restore process is AJAX powered to avoid server timeouts, even with huge sites. If you want a reliable, easy to use, open source backup solution for your Joomla! site, give it a try. Release 1.0.4-b1 fixes known security issues.