-------------------------<snip>--------------------
We're about to IPL our new Z machine and the discussion turned to MIM and the
fact that the LPAR about to be IPL'd won't be protected. We have shared DASD
and shared User Catalogs. SHROPTIONS are defined as (3,4).
Are we exposing ourselves to any risk of catalog corruption?
TIA,
Dave O'Brien
-----------------------<unsnip>--------------------
Yes, you are. Some sort of serialization/synchronizing product is just
about mandatory for all the images sharing that DASD farm.
Used to be that the folks at Washington Systems Center would help
convert MIM to GRS; I don't know if that's still true. Worth looking
into, since GRS is free and building ESCON CTC connections between
images isn't all that hard. (Can't speak for FICON, since I've never had
the chance to play with it.) Using GRS and converting most
RESERVE/RELEASE activity to ENQ/DEQ with a scope of SYSTEMS will also
improve shared-DASD performence. Are you planning to go with a BASIC
SYSPLEX ? Or are you planning to use a Coupling Facility and a full
SYSPLEX? If the latter, GRS is definitely in your future.
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