RAID 5 with different drives
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Solved by Windows7ge,
In RAID5 there is no dedicated parity disk. Following your logic and how it really works every disk in the array is the parity disk. There IS a RAID level that uses one physical disk as the parity. I can't recall if it's JBOD or RAID2,3, or 4.
I'm not 100% sure on this but so long as they're the same capacity, same RPM, and have the same level of cache they should work OK together.
If one is 5400RPM w/ 64MB cache but the others are 7200RPM w/ 128MB or 256MB I THINK it can still work but your performance will be bottle-necked by the slowest drive (don't quote me on that Electronics Wizardry would probably have a more accurate answer for you).
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