The new release (over a year old, so not so new) of CA 1 Flexible Storage has an option to exploit z/EDC when writing to tape or to exploit z/EDC and ACS256 encryption when writing to tape. In both cases, we have an option to do those both in a zIIP engine if available. On the z16 systems, it screams. A simple ADRDSSU job can run 30% faster (clock time) with barely an uptick in CPU usage. Running ADRDSSU with the ZCOMPRESS option goes a little fast clock-time; but you see a HUGE increase in CPU time.
But the z/EDC compression chip is wonderful. And running it in the zIIP is even better. Russell Witt Broadcom -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Jousma, David Sent: Tuesday, April 16, 2024 11:17 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Anyone exploiting ZEDC? 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. Dave Jousma Vice President | Director, Technology Engineering This e-mail transmission contains information that is confidential and may be privileged. It is intended only for the addressee(s) named above. If you receive this e-mail in error, please do not read, copy or disseminate it in any manner. If you are not the intended recipient, any disclosure, copying, distribution or use of the contents of this information is prohibited. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please erase it from your computer system. Your assistance in correcting this error is appreciated. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
