RAID-3?

[Greg 'groggy' Lehey]

On Wednesday, 18 August 2004 at 23:44:01 -0700, John-Mark Gurney wrote:
> I originaly was working on a RAID-3 module (which is possibly where
> pjd got his idea) that used Luigi's FEC code.  The advantage of this
> code was the fact that you could have n parity disks beyond the m
> data disks.  The advantage of this was that you could loose any n
> disks, and your data is still recoverable.  Unlike with RAID-4/5
> implementations where if you happen to loose a second disk (due to a
> power surge or something) while rebuilding, you'd be SOL.  That type
> of redundancy is good thing to have.

I can see that as a great advantage, but it's not part of the RAID-3
definition, and I can't see why you couldn't expand RAID-5 in a
similar manner.  Am I missing something?

Greg
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