Pommier, Rex R. wrote:
Radoslaw,
The cost disadvantage of having to buy the z9BC may not be there. We
are upgrading (smaller-grading??) from an H50 to a z9BC R07 G01. Our
size is dropping from 120 to 110 MIPS and the cost savings from software
savings will pay for the new box in 3 years. Mark is dropping
significantly in horsepower so my guess is that his payback is much
shorter.
Oh, I forgot very important advantage!
It is VWLC.
Having 31-bit machine you pay software fees based on your 100% MSU.
Having z9 you have two advantages:
1. MSU is reduced to 81% of real (technical) value.
2. Having z/OS you can switch your MLC to VWLC and pay for real CPU
consupmtion (4-hour rolling averages, etc. etc.). In that case you can
afford more powerful machine. Caution: there are fees which are still
total MSU - based, or the price does not depend on MSU at all. YMMV, etc.
--
Radoslaw Skorupka
Lodz, Poland
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