Since this system will contain the Event information for the Events of potentially all the calendars at UC Berkeley, back-ups should be performed as follows:
Store incremental hourly back-ups on the filesystem
Do a full back-up and dump to a tape drive nightly (if MySQL is chosen as the database, this may be accomplished with the "mysqldump" feature)
Remove the latest tape off-site each night
Save nightly dumps of all information for two months