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Two Arrays vs. One Array on one controller

Last Modified: 2012-05-12

Let's say I have your standard issue RAID controller card and 12 drives.  What would be the more ideal setup: a single 12 disk RAID 0+1 or two 6 disk RAID 0+1s?

I'm trying to determine if subdividng a set of disks into multiple arrays on one controller card really helps performance or not.  Some applications request that one volume exist on one array and the next volume on another, but if both arrays are on the same controller does it really matter?

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