How about some-one going the otherway - more improbable  ???.
Multi-site STAR about to be broken down to a (single-CEC) ring of
monoplexes.
True ...

I did some numbers on the environment - CATALOG is a *BIG* contributor to
GRS traffic.
Historically, this customer has some catalogs on "mixed" volumes, and so
converts IGGV2.
Placing a few usercats on their own volumes and allowing the RESERVE to
stand more than halved the GRS traffic.
Doing likewise to the (shared) MCAT will halve the remainder - at least. You
might all be surprised how much action your mcat(s) attract.

Things can be done in preparation, but the change to ring mode instills
dread.

Shane ...

From: "Skip Robinson"

> My story is improbable but true. We have four full function parallel
> sysplexes in our enterprise. Of these four, three were converted to star
> mode some time ago. The fourth had at most two members, one of which was
> very lightly used. So lightly used, in fact, that we stopped running it
> altogether; the LPAR has not even been activated for some time. Conversion
> from ring to star mode hardly seemed worth the trouble.
> ...
> Conclusion: even with *one* member, star mode rules.

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