Re: RAID-6: help wanted

Guy wrote:
> I took a look at your paper.  It's magic!  :)
> My head hurts. :(
>
> Ok, I understand that 27 disks is the limit.  But is that usable?  Would it
> be too slow?  The disk IO seems unreasonable with 27 disks.

Shouldn't be too different from RAID-5, at least as long as you have 
reasonably large I/O transactions.

However, unless someone can actually test it out, it's hard to say.

Note that supporting RMW on RAID-6 is definitely a possibility; I tried it 
once on a 6-disk configuration (the only one I have) and it was slower.

        -hpa

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