Darth, I think I see now that the hardware you are using does not support FlashCopy Consistency and delta resynch. When you're ready to update to hardware that support more recent versions of FlashCopy, Timefinder or Shadowimage you may want to look at the Shadowimage's "At-Time Split" capability.
Till then, it sounds like you have come up with a delta-resynch method that works out fine for you. Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of Darth Keller > Sent: Wednesday, May 28, 2008 8:08 AM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: [IBM-MAIN] PPRC and page datasets > > Ron - > > We're not really doing a remote copy. Logically, we mirror 1 half of > the > box to the other half of the same box. We are asynchronous for most of > the day and only swap to synchronous mode a few minutes before we're > ready > to do our backups, break the pairs once they are synchronous, and then > start the backups on the offline mirrors. Once the backup is complete, > we > re-establish pairs asynchronously and wait for the next cycle. > > In the past, we would take full volume backups for DR. These backups > would run over a period of several hours while batch was up and running > leaving us with loads of inconsistencies. Then we restore these > backups > at DR, do what clean-up we could, and then applications would start > their > recoveries. > > With our current method, we achieve very nearly synchronous backup. I > won't quibble about 'near zero', but I can say that to date when we > restore at DR, we've not seen any file problems. We still have > instances > where applications was running and our flashcopy was taken in the > middle > of their batch cycle, but it's much cleaner than anything we've had > before > and doesn't involve the extra costs of a remote site. > > ddk > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
