Although you can configure the details of the site backups and schedule from the graphical user interface it doesn’t provide you with the ability to kick the scheduled backup job off manually using the settings found in /etc/cpbackup.conf file.  This backup configuration is set via the WebHost Manager at Main >> Backup >> Configure Backup menu. To start the backup job off manually you need to log onto the server via SSH and then run the following command.

/scripts/cpbackup –force

If you’re using the new “backups” built into 11.40+ you need to run

/usr/local/cpanel/bin/backup