On Mon, 11 Sep 2000, Bruce Sterling Woodcock wrote:
From: "Chris Lamb" skeezics@measurecast.com
But to turn this thread on a slight tangent, I was curious about the performance advantages of spreading drives within a RAID group across multiple controllers.
[...]
interested too. :-) Given that More Disks Is Bettah, the question becomes whether or not it's worth the trouble (on a filer) to try to optimize the physical placement of those drives.
Worth the trouble? No.
Worth the trouble? Yes IMHO. The NetApp 202 class notes state:
"A RAID group that spans two different controllers shows a 10% performance degradation."
At your next convenient reboot, halt the filer instead, shuffle the disks around, and boot back up if you care about the 10%.
Until next time...
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