I used to work on the largest HFS+ installation in the world; and we saw data corruption all the time. Mostly large media files with block sized sequences of ze

I used to work on the largest HFS+ installation in the world; and we saw data corruption all the time. Mostly large media files with block sized sequences of zero'd data; we were lucky in that we had non-HFS+ file systems backing us up, but deeply unlucky in that the nature of our media was such that random blocks were very much more likely to cause media-level problems rather than container-level ones, and thus were much harder to catch.