Usually you can create the PPRC pairs, give the devices time to catch up the replication, then shut down, wait for replication to complete, swap the PPRC pairs to the new device, and IPL from the new devices with one hour or less additional downtime over your normal IPL times.
On Sat, Jun 15, 2019 at 4:56 PM Jesse 1 Robinson <[email protected]> wrote: > > Thanks! > > . > . > 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 <[email protected]> On Behalf Of > Jerry Whitteridge > Sent: Friday, June 14, 2019 4:16 PM > To: [email protected] > Subject: (External):Re: Volume compare utility > > Good to hear it went well Skip > > Jerry Whitteridge > Delivery Manager / Mainframe Architect > GTS - Safeway Account > 602 527 4871 Mobile > [email protected] > > IBM Services > > IBM Mainframe Discussion List <[email protected]> wrote on > 06/14/2019 03:44:07 PM: > > > From: Jesse 1 Robinson <[email protected]> > > To: [email protected] > > Date: 06/14/2019 03:44 PM > > Subject: [EXTERNAL] Re: Volume compare utility Sent by: IBM Mainframe > > Discussion List <[email protected]> > > > > This thread was originally motivated by needing to move from an older > > DS8 subsystem to a new one. We've done this repeatedly over the years > > with a combination of utilities and IPLs spread over several months. > > The goal this time was to do it in a big bang allowing for several > > hours of down time but otherwise all in one single window. The problem > > with our old way of doing things was that we would encounter many > > separate periods of DR risk where we could not recover the entire > > production environment. This time, by using PPRC with all systems > > down, there was no risk window since no data updates could occur in > > the meantime. > > > > I'm happy to report that the new procedure worked. We abandoned the > > idea of 'comparing volumes' as taking too long with minimal payback. > > We shut it all down, synched up data volumes via PPRC, and IPLed > > everybody with an IODF that contained the new DS8 in place of the old. > > It went even smoother that we hoped for. Lots of planning and desk > > checking, no serious oversights. > > > > Thanks to all who contributed to this project! > > > <snip> > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
