Does the phrase alternate sysres ring a bell with anyone here ? Know where I can look it up ? Paul Hanrahan
-----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Tom Schmidt Sent: Friday, September 02, 2005 1:29 PM To: [email protected] Subject: Re: One more about SYRES Sharing On Fri, 2 Sep 2005 12:04:19 -0500, Tom Schmidt wrote: >On Fri, 2 Sep 2005 17:38:21 +0200, Lucas Morton wrote: > >>I'm in the process of redesign out z/OS infrastructure: In 1 year we >>increased our z/OS system images from 2 (1 production and 1 testing) >>to 6 (2 in production sysplex, 2 dev. and 2 test). So I think that a >>shared SYSRES might simplify the thing. >> >>Should I share SYSRES between sysplexes? I now that I can't share >>PDSE's outside a plex, so I will clone volumes with PDES, but.. what >>about the other O.S. and Software datasets?. > >Lucas, > >You don't mention whether you have MIM available to span ENQs across >your plexes, so I'll presume that you don't. If that is correct, then >you should NOT share a sysres across plexes since you will not have >data set integrity from one plex to the next. > >Clone the sysres to make things easier for you for sure, but don't >share without dataset integrity. (Bad things(tm) happen if you lose >integrity.) > >-- >Tom Schmidt >Madison, WI Sorry for answering my prior post, but you ought not share sysres from test to development to production anyway: You should roll your sysres maintenance up through those levels (for quality control) just as your applications should roll up through those levels. So whether you have MIM or not, you ought to maintain an offline (not-in- use) SMP/E 'target' sysres, then one* IPL sysres for each level (test / dev / prod) with the prod sysres being the top of your hierarchy. You could, if you have the DASD, also have 2 IPL sysres at each level (say, A and B) with one being used currently and the other as the former/next value for clone purposes. Several shops that I know of do essentially that. -- Tom Schmidt Madison, WI ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
