On Tue, Aug 10 at 15:40, Peter Taps wrote:
Hi,
First, I don't understand why parity takes so much space. From what
I know about parity, there is typically one parity bit per
byte. Therefore, the parity should be taking 1/8 of storage, not 1/3
of storage. What am I missing?
Think of it as 1 bit of parity per N-wide RAID'd bit stored on your
data drives, which is why it occupies 1/N size.
With 3 disks it's 1/3, with 8 disks it's 1/8, and with 10983 disks it
would be 1/10983, because you're generating parity across the "width"
of your stripe, not as a tail to each stored byte on individual
devices.
--
Eric D. Mudama
edmud...@mail.bounceswoosh.org
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