[otrs] Preferred method for backup and disaster recovery

What methods do you have in place for a complete backup and disaster recovery of an OTRS system? What is the preferred method to backing up the system both in circumstances with and without a tape drive in the machine itself? If the user who ultimately might have to restore your system is not a native Linux user, but does use Unix for other systems, would you recommend anything different? It would appear the obvious solution would be a mysql dump and grabbing the Config.pm file, but there must be more to it than that, including a more transparent solution from disaster to recovery. Thank you!