Hardware sizing vs capacity planning

capacity-planning

Folks,
Is hardware sizing and capacity planning same? I have seen these terms being used together and google does not return any results that help me understand the difference.

Would appreciate any explanations.

regards,
avajurug

Best Answer

There is a very accurate difference as explained by Joel in Capacity Planning, H/W Sizing:

"[...] decide whether you need to do capacity planning or hardware sizing, you can't do both, at least not at the same time. In capacity planning the software and hardware are constant while the workload varies (ie, given a particular system, how much work can it do?). In hardware sizing the software and workload are constant while the hardware varies (ie, given a particular amount of work, what's the least-costly system that can handle the workoad in the specified performance constraints?)."

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