The rotation describes how many backups are stored retroactively when a new backup is created. We also call this slots.
The oldest backup is always deleted if the number of slots would be exceeded at backup creation.
Example: You have rented Backup Premium with 5 slots. You have set that you want to create a backup every day. After 5 days 5 backups have been created. On the 6th day the backup from the first day is deleted so that a maximum of 5 slots are in use.
If you have any questions, please feel free to contact us.