In 20 years of running parallel sysplexes for sandbox, for development, and for production (all separate), I have never seen structure corruption after an OS or hardware failure. We've had two different box failures (z10, z12), which is the ultimate rude down. In both cases, once the box was repaired, all systems IPLed without a hiccup using the structures in the surviving box.
I also wish there were some external notification in case of auto IPL. There is definitely a record in the HMC Hardware Messages, but we don't have any API to trap and communicate those. ;-( . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-302-7535 Office [email protected] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Elardus Engelbrecht Sent: Wednesday, August 31, 2016 11:14 AM To: [email protected] Subject: (External):Re: SAD testing in sysplex Jesse 1 Robinson wrote: >I was pretty wary of AUTOIPL on our beloved production sysplex for quite a >while but finally caved to best-practice arguments. IBM's long-held position >is that a dead system is bad for the whole sysplex. A comatose system may even >be worse, as it still registers a heartbeat but has no brain function. The >goal is to shoot a useless system and get it back up ASAP. Agreed with all of it. What about XCF? Will it (the structures inside XCF) be infected by that dead/comatose/useless system? >It may seem reckless in view the agonizing hours we once spent trying to save >a system that we finally had to IPL anyway. Or those DBAs tried in a reckless way to repeatedly debug a dead database system until an IPL resolved everything... >So AUTOIPL requires an attitude adjustment for those of us in the biz for a >long time. I believe it's worth the trepidation (Merriam Webster's word of the >day). If you can insert a process to SMS (and wake up) the Sysprogs when AUTOIPL is being done, we will reconsider it. >Plus it never hurts to bank another excuse for more red wine. ;-) Hic! Haec! Hoc! (sorry to the creators of Asterix the Gaul... ;-D ) Thanks for your kind notes. Groete / Greetings Elardus Engelbrecht ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
