Im a little confused as to which to use, rsync or mirrordir? I personally was just gonna zip em up and throw em on the disk but if one of these would be better i have no problem playing with it and trying them out just confused which one to be trying

I like the idea of being able to do the incremental/differential type backups, would save space and allow me to do more backups then the way I had planed.
Also with these it seems its just doing my html files right? im still going to have to export my mysql dbs to a .sql file and copy that over right? or do they include some kind of db backup as well?
Thanks guys again for all this info!