Thiemo Nagel wrote:
Inverting your argumentation, that means when we don't see z >= n or inconsistent z numbers, multidisc corruption can be excluded statistically. For errors occurring on the level of hard disk blocks (signature: most bytes of the block have D errors, all with same z), the probability for multidisc corruption to go undetected is ((n-1)/256)**512. This might pose a problem in the limiting case of n=255, however for practical applications, this probability is negligible as it drops off exponentially with decreasing n:
That assumes fully random data distribution, which is almost certainly a false assumption.
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