I wonder how many people who read this list use Time Machine and, of those, how many have ever checked to see if the Time Machine backup is a faithful copy of the original volume(s).
I can demonstrate one (perhaps pathological) case where Time Machine fails to back up a file.
I was able to reproduce Alan’s bug on my machine.
Time Machine is great. But it has enough quirks and failure scenarios that I reach first for my nightly SuperDuper backup and then Time Machine’s backup only when I need to go back further than yesterday or rescue a file that hasn’t made it to my nightly backup yet.
(via Nikita Zhuk)