When having large SF orgs with large file storage amount, is impossible to see the progression on the backup. You can only see the object that's being processed. For our org we've seen "Attachments" object under backup for more than 1 month without any idea on where we were.
It would be really helpful to have information on the progression of each backup object (either data or file storage).
Showing the information like: "Backing up file storage in 'Attachments' (1/12). Retrieving record XX of a total of XXX records from Salesforce". Already backed up XX GB in file storage.