What SMF records contain the CPC name? Thanks, Martin
Martin Packer, zChampion, Principal Systems Investigator, Worldwide Cloud & Systems Performance, IBM +44-7802-245-584 email: martin_pac...@uk.ibm.com Twitter / Facebook IDs: MartinPacker Blog: https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker From: Skip Robinson <jo.skip.robin...@att.net> To: IBM-MAIN@LISTSERV.UA.EDU Date: 07/01/2016 15:49 Subject: Re: Change CPC name in HMC Sent by: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> First off, you can name a CPC anything you want within the syntax rules. Ideally you should pick a good name at initial install, but it can be changed later. That being said, after we installed z12s in a new data center in 2013, we intended to rename the z196 remaining in the old data center. We never got that done because we had never actually renamed a box before and were wary of what it would take to accomplish without disruption. Nothing crucial depended on a rename, so we shined it on. The name is embodied in two places: -- The IODF names all processors. -- The HMC/SE names each processor in several places from POR (Reset) profile onward. IODF and HMC must agree. For a new box, this is not so hard. The trick is make a change without hosing up the environment. Also consider other implications: -- BCPii must also be updated. I consider that part of the HMC/SE tasks above, but don't overlook it. -- POR will be required. -- SMF records contain the CPC name. Any post processing must take a change into account. -- It's not uncommon for various automation processes to refer to CPC by name. Again, allow for this. -- Many folks in the IT community may be attached to the old name in various ways. Any change must 'socialized' thoroughly. I suggest you pick a name that you won't regret later. Consider the effects of future model upgrades, workload repurposing, and physical relocation. However, if an upgrade involves a transition period where both old and new boxes must coexist, you need two separate names at least for a while. I can see the appeal of serial number to avoid these conundrums, buy as you note the number is meaningless to all but a handful of infrastructure geeks. . . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile jo.skip.robin...@att.net jo.skip.robin...@gmail.com > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] > On Behalf Of Elardus Engelbrecht > Sent: Thursday, January 7, 2016 04:56 AM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: [Bulk] Re: Change CPC name in HMC > > Tony Thigpen wrote: > > >I have done such a change on two z10s with good results. The third time did > not go so well. For some reason, the secondary cpc did not change. Everything > looked ok until we did a POR, then it would not come up. We had to restore the > CPC. > > Ouch. Where is that behaviour documented? > > Do you get a warning during the renaming that an upcoming POR may fail? > > >I don't know what went wrong, but after that, we no longer change the > names. > > Now you got a new scar and a T-shirt as a bonus ... :) > > I would also not repeat that stunt after one failure. > > Groete / Greetings > Elardus Engelbrecht ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
