Re: RAID 5+0 support

[Phillip Susi]

Martin Drab wrote:
> Speed is the issue here, I believe. By stripping two RAID-5 arrays you 
> ought to get the reliability of the RAID-5 but with considerably higher 
> speed. That's basically why RAID-50 exists, I think.

One big raid-5 would have higher speed because it would have one more 
disk allocated to storing data rather than more parity.  The raid 5+0 
isn't really going to be any more reliable because it can withstand a 
single failure in either half, but not two failures in one half, so in 
the face of a double failure, you have a 50/50 chance of one being in 
each half. 



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