A question related to the original one: I'm thinking of digitizing some old VHS tapes and storing the full-resolution QuickTime files on several hard drives. I'll make DVDs from them, but I'm not sure about the lifetime of consumer-grade DVDs, so figured I should hold onto the original files. If I do that, should I hook up the drives a couple times a year and let them run for a few days to give them some exercise? Or doesn't it matter? Patty