What happens to data that gets created/updated during the test? You say you resume production as if nothing had happened. But surely something did happen during those hours of testing. This is why we have assiduously avoided failover even during actual production outages: what happens to client data? During our regular tests, the DR environment is an 'island' where all applications are invited to test with throw-away data. At the end, the DR DASD farm is overwritten; all test data is lost.
. . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-543-6132 Office ⇐=== NEW [email protected] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Elardus Engelbrecht Sent: Monday, May 29, 2017 8:41 AM To: [email protected] Subject: (External):Re: DR Failover Jesse Robinson wrote: >So I'm wondering about other shops' experience with mainframe DR. Has it ever >been necessary to keep the business running? Who orchestrated the procedure? >How long did it take? And finally, how did you get production back to the >primary data center? We have no choice. We must have at least on/two formal tests per year for our z/OS systems. All LPARs are brought up at DR site. Network settings are changed everywhere (our networks, our clients networks and MF network). All our clients are invited and they participate and report anything! From the moment we declare a DR (and shut down everything at Primary Site), we are up and running at DR site in a few hours and users can continue with their work from their own offices. Since those DR tests are just tests, when the exercise is completed, we started up our Prod systems and continue as if nothing happened. We obtain feedback from everyone about everything under the sun, moon and stars... Based on my recent posts ... Everything (IPL procs, Network changes, etc.) is documented (.boo and .pdf formats as well as URLs placed too) and placed everywhere on laptops, shared network resources, hardcopies, external drives, etc. This is to enable external people to continue our work if all of us are dead or kaput. (Or simply disappear a la Crysis (game) via a remote tool. ;-D ) Based on complaints about KC, I must mention that we even test connections to big blue websites from DR site. We (z/OS people) simply do not take any changes. Murphy and his laws are not welcome. ;-) Groete / Greetings Elardus Engelbrecht ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
