My only copy of my (large) iTunes library (and all my personal files) is on my MacBook, and I was thinking about using Time Machine to back it all up to an external hard drive (a Western Digital MyBook plugged into the USB port on my Airport Extreme).
My question is, when Time Machine makes a copy of a file (say, a song) to the hard drive, since that file never changes I'm guessing it will never get updated by Time Machine. But will Time Machine regularly review the file to make sure it had not become somehow corrupted?
I've had trouble with hard drives going bad in the past, and I would hate to be trusting Time Machine for a months and months only to find out that some hard drive partition got corrupted and the file was actually gone long ago.
Any thoughts?