Jim Marshall writes:
>Bad news is you would have to buy Parallel Services
>to have ADABAS running on multiple engines.
But the original poster is nowhere near hitting a uniprocessor capacity
limit yet. For example, a System z9 BC with one processor active would
offer up to a little over 4 times the capacity as his current dual
processor z890 configuration. (That's a z9 BC Model Z01 compared to a z890
Model 230.) Moreover, a z9 BC would have 18 intermediate steps from H01
through Y01 (inclusive) just in the uniprocessor capacity configurations.
So this potential processor affinity issue may not be a problem, at least
not in the short term. Similar logic applies for the (x)02 (dual processor)
range of models, except that the capacity multiple would be about 8 times
what he has today (z9 BC Z02 compared to z890 Model 230).
All of which means it would be a very, very good idea to have a thorough
discussion of all reasonable options with a smart person or two. Although,
as a rule of thumb, it's not a good idea to embark on large capacity
upgrades of older models. ("Large" gets smaller as the model gets older.)
It almost always makes much more sense to order the capacity upgrade in the
form of a model (technology level) upgrade. IBM at least is going to
respect MSUs, and the original poster has got at least z/OS in the
equation.
As a powerful clue concerning this rule of thumb, IBM is withdrawing z890
capacity upgrades from marketing effective September 30, 2008. (Originally
the date was June 30, 2008. That original date was announced in June, 2007.
In May of this year, IBM announced a 3 month extension.) Starting next
month, increasing capacity on a z890 can still be done but requires moving
up in hardware technology. Or swapping whole physical machines via the
secondary market I suppose.
- - - - -
Timothy Sipples
IBM Consulting Enterprise Software Architect
Based in Tokyo, Serving IBM Japan / Asia-Pacific
E-Mail: [EMAIL PROTECTED]
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