There are many backup tools around and many ways how to use them. For example, it is possible to use gzip and ftp to make a local copy of your web site. This approach have couple drawbacks such us: data are transferred over the internet unencrypted and we are most likely transferring data which we had copied over the day before.
This is a companion discussion topic for the original entry at https://linuxconfig.org/using-rsync-over-ssh-an-ultimate-backup-tool