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Common Disk Sizing Oversight

March 28, 2013

While I am talking about disks, I want to pass this tip along. Remember to consider the impact of utilities on disk capacity and throughput and therefore disk requirements. For example, online reorgs are about 8-10x harder on the disks than normal transaction processing. Therefore you must take this into consideration when determining the number of disks required, along with your utility window and impact on transactions. I can tell you from experience that it is almost always overlooked and always a problem. That’s the view from the real world.

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