I think I understand better the IWP concept: Typically customers who have isolated Websphere workload in a dedicated LPAR to control SW cost have right now the possiblity to move this workload in a current LPAR (so reducing the number of LPARs). That allows to not have to increase the billed capacity only for the IWP adjsuted program product as CICS and IMS. But z/OS , DB2 ... (not in IWP adjusted program) will have a billed capacity which will increase thanks to this new workload. I think in some case that will be fair and attractive; the condition is to control this new rules well.......... and it is a compromise between a smart SW mapping and a cost control approach.
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