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August 17, 2007


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Couldn't have been any more correct.

Although on the other hand just adding few more spindles could be the only issue sometimes. As noticed back in 2006: we tuned and tuned and tuned till the last possible sql was bound. Only to get very little positive impact.

Turns out, all our disks were upto 90% full. Although they are high capacity disks, once "a" disk goes beyond certain capacity, performance starts degrading. In our case, we had no choice but to add more spindles to relieve contention.

Never had any issues after bringing them down to about 60% full.

So open for debate?

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