Where can I set up data backup?

If a control panel is installed on the server, you can use it to set up data backup.

• If you are using FASTPNEL: https://fastpanel.direct/wiki/en/creating-backup-plans-by-the-example-of-using-dropbox

• If you are using Ispmanager: https://docs.ispmanager.com/ispmanager6-lite/backup-copies

However, most modern CMSs have a built-in mechanism for data backup, or they can do it via a special plugin even if no control panel is installed on the server.