> Sorry, I couldn't find a diplomatic way to say you're completely wrong.
We don't necessarily expect a diplomatic way, but a clear and
intelligent one would be helpful.
In two-disk RAID5 which is it?
1) The 'parity bit' is the same as the datum.
2) The parity bit is the complement of the datum.
3) It doesn't work at a bit-wise level.
Many of us feel that RAID5 looks like:
parity = data[0];
for (i=1; i < ndisks; ++i)
parity ^= data[i];
which implies (1). It could easily be (2) but merely saying "it's not
data, it's parity" doesn't clarify matters a great deal.
But I'm pleased my question has stirred up such controversy!
John
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