There's also a triple technology dividend between a z800 and a z10 BC. And
more granular capacity settings. And zIIPs and zAAPs. And much beefier IFLs
for additional consolidation potential.

I'm not sure what capacity you have for your z800, but let me guess it's a
2066-0B1 which is approximately 99 MIPS and exactly 20 MSUs (full
capacity). Other examples are similar. Here are some z10 BC configurations
that would be analogous to a 2066-0B1 (ignoring potential specialty engine
benefits):

2098-J01: ~96 MIPS/12 MSUs
2098-E02: ~96 MIPS/12 MSUs
2098-K01: ~108 MIPS/14 MSUs
2098-F02: ~107 MIPS/14 MSUs

Let's go with the average of 13 MSUs. Just moving to a z10 BC would yield a
~35% reduction in MSUs, which then yields a substantial reduction in IBM
license charges. For example, if you're currently seeing a peak 4HRA of 19
MSUs on a z800, you'd probably see that change to 12 MSUs on a z10 BC.

There's most likely a strong business case here for doing something
different/smarter when putting the ingredients together. Whether your
employer sees the business case reasonably accurately then acts on the
business case is another question, unfortunately. :-(

- - - - -
Timothy Sipples
Resident Enterprise Architect
Value Creation & Complex Deals Team
IBM Growth Markets (Based in Singapore)
E-Mail: timothy.sipp...@us.ibm.com
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