[takeda]

It looks like it is all speculation by cyberjock, and his assumption that data could shift by 3 bits or that metadata doesn't get corrupted is wrong.

I experienced memory corruption first hand (in my case it was not really bad memory, but bad PCI device which caused random bit flips).

Yes, it caused data corruption, and eventually I got whole pool broken. At one point when I removed a snapshot, my system crashed, and was panicking every time I tried to import the pool.

But I also had data corrupted on SSD that was using UFS2 (it was on FreeBSD).

Actually if anything, in my case ZFS saved me, because of its extensive memory usage (when you have 4GB+ RAM it enables ARC) the system was crashing every 1-2 days