http://www.amember.com/docs/Using_Backup/Restore_and_Automated_Backups looking to back up DB from amember before i updated to 4.7 and nothing in the admin panel or website
Automatic backups won;t be available in your installation if you have any CC payment plugin enabled. In this case you should use your hosting control panel to backup database. Please backup /amember/application/configs/key.php as well