Many of them are required to have it. People get sick and hurt at 3am on Saturday night. Can’t have an IPL that causes an outage then. Airlines run 24 by 7 worldwide. (Those that are international) Walmart has 24 by 7 stores. Some companies have development staff all over the world. My last employer did. Which required 24 by 7 availability.
Sent from Yahoo Mail for iPhone On Tuesday, May 23, 2023, 8:32 PM, Bob Bridges <[email protected]> wrote: LOL, maybe so. And do most z/OS installations have that full redundancy? --- Bob Bridges, [email protected], cell 336 382-7313 /* The Internet is the first thing that humanity has built that humanity doesn't understand, the largest experiment in anarchy that we have ever had. -Eric Schmidt */ -----Original Message----- From: IBM Mainframe Discussion List <[email protected]> On Behalf Of Bill Johnson Sent: Tuesday, May 23, 2023 17:22 Bob needs to get into the 21st century. --- On Tuesday, May 23, 2023, 5:20 PM, Pommier, Rex <[email protected]> wrote: I think what it means is that you will only "suffer" .3 seconds of application outage in a year. Of course that means you have a fully redundant SYSPLEX set up with duplicated everything such that when you do have to bring down a CEC, the application workload is pushed to a different node and keeps running. -----Original Message----- From: IBM Mainframe Discussion List <[email protected]> On Behalf Of Bob Bridges Sent: Tuesday, May 23, 2023 4:14 PM I'm just getting around to reading the article someone cited here: https://urldefense.com/v3/__https://www.linkedin.com/pulse/results-mainframe-application-modernization-migration-ross-mauri/ I heard that "8 9s" claim go by before, but I didn't pay much attention. But in the article it says that equates to 0.3 sec of downtime per year, and I pause. Does "down time" not include IPL, then? When you IPL, doesn't that count as "down"? Because if it doesn't, I don't see what use that measure is. Or does no one IPL any more? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
