Since a backup is only as good as the restore, I pronounce Time Machine to be worthless .
Actually, worse than worthless. The inclusion of Time Machine with OS X has largely eliminated alternatives. It’s malign.
I’m not completely surprised. The chaotic state of Time Machine/Time Capsule documentation is a pretty good indicator that the product is troubled.
I’ll count myself lucky this time. I discovered that my main photo library backup, containing about 10,000 irreplaceable images, was worthless.
How am I lucky?
I have two other backups, including a straight file copy that I’ve verified works. So I learned I couldn’t rely on Time Machine at the cost of a couple of hours of lost time. It could have been much worse.
I’m going to next test a restore of this library from my Retrospect Professional/Windows backup.