Serious servers use ECC RAM so bit-flips in memory are not an issue. CRC32 is also pretty robust against single-bit errors. If you think about it, you can't r

Serious servers use ECC RAM so bit-flips in memory are not an issue. CRC32 is also pretty robust against single-bit errors. If you think about it, you can't really make any guarantees for non-ECC systems. Flip the wrong bit, and the kernel will delete all your data. There is an if statement somewhere waiting to make this happen, and if the program code can randomly change, eventually it will. Typical disk corruption patterns are a whole sector of zeroes being read, or reading data that belonged somewhere else. If you want to prove that ZFS's checksum is better, you need to prove that it's better against the patterns of corruption that actually occur.