I'm using for the first time rsync to create daily backups of my websites and I was wondering if I should overwrite the previous copy or should I create multiple copies and overwrite only the oldest one ? (I might not have enough space for that, though).

I actually have also this question. Let's suppose most of files are accidentally erases.. does rsync delete all these files from the backup space because they don't exist anymore ? How does exactly work in this case ?

thanks