I created sandbox sysplex within one CPC (shared CPs for both MVS and CF
LPARs, IC channels).
I observed significant performance improvement when changed GRS from
ring to star mode. I didn't notice such improvement, when changed XCF
transport from CTC (ESCON) to CF structures.
From the other hand I was told that there is not noticeable difference
between ring mode and star mode for two-member sysplex.
Is the difference because of star mode advantage or just I have
something something to tune when using ring mode ?
BTW: I don't want to use ring, it's just curiosity.
--
Radoslaw Skorupka
Lodz, Poland
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