"Thomas F. O'Connell" <tfo@sitening.com> writes:
> I would've expected the RAID to protect postgres from the possibility
> of data corruption, but I guess not.
Ooops :-(. It might be interesting to get pg_filedump dumps of the
corrupted pages, just to see what the failure pattern looks like.
I doubt there's much we can do about it, but you don't know till you
look. ("If we knew what it was we were doing, it wouldn't be research.")
regards, tom lane