Resync after the secondary volume is updated? If the mirroring software supports that, it would save a lot of retransmitting. I am fairly sure the ESS F20 and 800 PPRC did not have that, and the user did not say what he is using to mirror.
But you only need that after a backout after running at the new site. On Tue, Feb 14, 2012 at 3:54 PM, Pommier, Rex R. <rex.pomm...@cnasurety.com> wrote: > Mike, > > Wouldn't number 10 be a massive amount of unnecessary work and replication? > I was under the impression that if you had replication going between the two > arrays and you suspended the replication, that you could bring up the > replication targets in a read/write mode on the new servers. If you had to > back out, after shutting the new servers down, you could "unsuspend" the > replication and data that had changed on the source volumes would be > replicated to the targets, and data on the targets that had changed would > also have the source data pushed to overlay the changed targets. Is this not > how replication works? > > Rex > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf > Of Mike Schwab > Sent: Tuesday, February 14, 2012 2:59 PM > To: IBM-MAIN@bama.ua.edu > Subject: Re: Changing sysplex hardware > > Since you are moving the entire datacenter and all dasd is already > replicated, then. > Old location: > 1. Shut down your existing systems. > Old location prefered. > 2. Break dasd replications. > New location. > 3. IPL one system. > 4. Start Sysplex using your new datasets. > 5. IPL the other systems. > > Backout: > New location > 6. Shut down your systems at new locations. > Old Location. > 7. IPL one system. > 8. Start Sysplex using your old datasets. > 9 IPL the other systems > When up: > 10. Restart replication from scratch for next try. The secondaries > will have been updated (access date at a minimum), so restarting a > suspended replication would result in bad volumes. -- 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 lists...@bama.ua.edu with the message: INFO IBM-MAIN
