I use automatic backup. I am trying to investigate a problem and I would like to see the detailed backup execution logs. Online documentation for Moodle says:
A last execution log of scheduled course backups can be found in>Administration> Site administration > Reports > Backups. It displays a list of all course backups made, the time taken to create them, their status (see below), and the next scheduled automated backup execution time.
Clicking on a particular course name will cause a detailed execution log to be displayed, including date, hour and minute when each step of the backup was performed.