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To: Jon Tara who wrote (17978)5/30/2003 1:20:03 PM
From: SI Bob   of 32871
 
The comparatively low cost of disk space (it's still not cheap when it's 15k-rpm SCSI drives) isn't the biggest issue. Cache is.

No matter how much disk space you have, it's important to stay away from the disks as much as possible. The fastest ones are orders of magnitude slower than memory.

If 10% of your reads on a very busy system are not being filled from cache, you've got serious problems.
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