W dniu 16.04.2024 o 18:16, Jousma, David pisze:
Is anyone exploiting ZEDC data compression accelerator in your environments?
We recently licensed the enablement and are working through the issues in our
DEV environment.
We initially enabled Extended Format/COMPACT ZP, for all DSORG PS datasets, but
are quickly finding that DFSORT, SAS, ISPF recovery datasets all have issues.
We’ve turned back off for now.
There is no central location in any IBM doc(including recent REDBOOKS) that
discusses where we can and cannot leverage ZEDC. As it stands now, we had to
back out, and looking at taking a new approach in our ACS routines checking for
DSORG=PS, and then if not temp-dataset, or tape assign a DC with the right
options.
What I am wondering is if anyone is further along that can share how they
rolled out? I really don’t want to have to make the applications teams have
to “opt-in” by coding a DC in their JCL or other dataset allocations.
I've been using zEDC for years, since z13, AFAIR. Then z14, then z15
until now.
No issues with DFSORT (we've been using a lot of it, including huge jobs
- ~320GB of real memory instead of SORTWKx).
No issues with ISPF.
No SAS => no feedback.
The only sad news is... for DASD salesmen - no space upgrades. :-)
BTW: One of recent changes is PDSE compression. I love it when I remain
SMPPTS :-)
--
Radoslaw Skorupka
Lodz, Poland
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