Tom, your last comment is actually the reason I was considering backup
sets as a top contender for long term storage.  Generate a backup set,
the owner signs for the tapes, and they're gone -- reserving library
space and volume ranges for data that is actively used or needed for DR.

The inability to move a backup set to a new generation of media, as Bill
noted, is something I hadn't considered!    

Mike Haskins
Agway, Inc