https://www.ibm.com/support/pages/system/files/inline-files/zOS_Support_for_z15.pdf
See page 43 in this presentation. Do you have the PTF for APAR OA56143 installed? Jim Mulder z/OS Diagnosis, Design, Development, Test IBM Corp. Poughkeepsie NY "IBM Mainframe Discussion List" <IBM-MAIN@LISTSERV.UA.EDU> wrote on 07/22/2021 03:55:28 PM: > From: "PINION, RICHARD W." <rpin...@firsthorizon.com> > To: IBM-MAIN@LISTSERV.UA.EDU > Date: 07/22/2021 08:16 PM > Subject: zEDC compression on z13 and z15 > Sent by: "IBM Mainframe Discussion List" <IBM-MAIN@LISTSERV.UA.EDU> > > We migrated from a z13 to a z15 this past weekend. We are running z/OS 2.2, > z/OS 2.2 on the z13, and the same z/OS 2.2 on the z15. z15 maintenance was > applied to z/OS 2.2, and activated a couple of months ago. We are > using the same > SMS configuration on the z15 as the z13, and that includes the zEDC > compression > Data Class. > > I restored a dataset that was created on the z13 using zEDC > compression, and needed > to make a copy of the dataset on the z15. I was surprised to see an > almost 20,000 > track difference between the z13 created dataset, and the z15 > created dataset. I > used the same SMS Data Class to make the z15 version of the dataset. > > > Enter "/" to select action Tracks %Used > ------------------------------------------------------------------------ > Z13.CREATED.DATA.SET 47550 99 > Z15.CREATED.DATA.SET 64555 100 > > > SMS allocation messages for the z15 created dataset follows. > > IGD17070I DATA SET Z15.CREATED.DATA.SET > ALLOCATED SUCCESSFULLY WITH 1 STRIPE(S). > IGD17160I DATA SET Z15.CREATED.DATA.SET > IS ELIGIBLE FOR COMPRESSION > IGD101I SMS ALLOCATED TO DDNAME (SYSUT2 ) > DSN (Z15.CREATED.DATA.SET) > STORCLAS (STANDARD) MGMTCLAS (DE180DAY) DATACLAS (COMP) > VOL SER NOS= TL0018 > > > I have not looked into the TCB/SRB I/O numbers of the > z13 creating job to compare against the z15 job. > > Anyone have an idea as to why such a dramatic difference? > > Confidentiality notice: > This e-mail message, including any attachments, may contain legally > privileged and/or confidential information. If you are not the > intended recipient(s), or the employee or agent responsible for > delivery of this message to the intended recipient(s), you are > hereby notified that any dissemination, distribution, or copying of > this e-mail message is strictly prohibited. If you have received > this message in error, please immediately notify the sender and > delete this e-mail message from your computer. > > ---------------------------------------------------------------------- > 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
