W dniu 2010-08-21 15:30, Steve Comstock pisze:
Peter Relson wrote:
Regardless of how many CPs an LPAR may allow there may be an operating
system restriction to a smaller number.
It happens that at this point in time z/OS (1.11) is a bit ahead of
the LPAR limit so that it can support what is allowed within the LPAR.
I don't know about other operating systems.
Hmmm. So, can z/OS support 80 x 32 = 2560 active CPs per sysplex?
Assuming you need the number to some slide slideshow, just put "approx.
3000 CP's". Fine print for "approx." ;-)
It sound quite impressive. Details are irrelevant.
BTW The real size (& strength) of sysplex is: NOBODY ON EARTH DID NOT
REACH THE (current) SYSPLEX LIMIT. No customer needs exceeded
scalability of Parallel Sysplex.
Actually, limits depends on:
1. LPAR limitation
2. z/OS limitation
3. Parallel Sysplex connectivity limitations! At least in the times of
external sysplex timers there was a limit of CPCs attached to the timer.
It was AFAIK...24, not 32. Of course single CPC can have several z/OS
LPARs in the same sysplex, but then CP limits apply...
I don't know current limits for STP networks.
Last but not least: I did not analyzed limits for sysplex links
(CF-MVS), but it also could be limiting factor.
BTW: some applications could also have some limitations which further
limit the *usable* size of sysplex.
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