This looks like a great idea. Not sure how it might impact or be impacted by XRC, but it would be worth a look. Can't tell you how much grief we went through after usercats began dropping like flies. Fortunately it was DEV and not PROD, but lots of folks had their work disrupted for days on end. ;-(
. . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595 Mobile [email protected] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Ron Hawkins Sent: Wednesday, December 02, 2015 3:45 AM To: [email protected] Subject: (External):Re: User Cats and Replication Sites Skip, Is there a case here for taking regular snapshots of your UCATs and other small critical datasets? Using persistent FlashCopy the UCATs or their volumes could be copied every hour and retained for quick receovery. 30 days' worth of hourly copies of a 1000 Cyl UCAT would use less than 1GB of space. Persistent FC would give you a good backup in both sites. Ron -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of J O Skip Robinson Sent: Sunday, November 29, 2015 11:55 AM To: [email protected] Subject: Re: [IBM-MAIN] User Cats and Replication Sites Touche. We had a near catastrophic catalog problem some time back. Of course the replicated copy faithfully mirrored the errors, which were procedural rather than structural--tons of vital data deleted by mistake. Still I value mirroring for the classic case of disaster recovery: the production data center suddenly goes offline and cannot be resuscitated within an acceptable window. Mirrored DR allows you get up and running quickly, warts and all. . . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595 Mobile [email protected] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Shane Ginnane Sent: Wednesday, November 25, 2015 2:55 PM To: [email protected] Subject: (External):Re: User Cats and Replication Sites On Wed, 25 Nov 2015 20:53:09 +0000, J O Skip Robinson wrote: >Nothing beats replication, the more the better. Hmmm - unless you happen to have a critical error in the source. Replicating that quietly everywhere can leave you with non-IPLable systems *everywhere*. Which you may not find out about until you try an IPL. And yes, it has happened - LE bug that broke MCAT access for example; ran fine till IPL. Brings to mind the "Schrodingers backup" discussion a few months back. Shane ... ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
