>From the z/OS V2.4 migration guide https://www-01.ibm.com/servers/resourcelink/svc00100.nsf/pages/zOSV2R3GA320889/$file/e0zm100_v2r3.pdf
In a multisystem Storage Management Subsystem (SMS) complex, operating systems share a common set of SMS classes, groups, ACS routines, and a configuration base, which make up the storage management policy for the complex. This storage management policy is maintained in a source control data set (SCDS). When this policy is activated for SMS, the bound policy is maintained in processor storage and on DASD in an active control data set (ACDS). Systems in the complex communicate SMS information through a common communications data set (COMMDS).It is recommended that to successfully share SMS control data sets in a multisystem environment where there are mixed levels of DFSMS, you update, translate, validate, and activate SMS policies on the system with the latest level of DFSMS. When an earlier control data set is to be updated or activated, the control data set is formatted by the later-level system. The shared SMS control blocks reflect the new, rather than the previous, lengths and control information. For fallback, IBM recommends restoring SMS control data sets from backups taken on the fallback release. Editing a policy on an earlier system could invalidate unused control information and prevent the control data set from being accessed by a later system. A warning message is provided before a policy can be changed on an earlier system. ACS routines may need to be updated and translated so to not reference policy items not known to the earlier system. Just confirms what we all stated Lizette -----Original Message----- From: IBM Mainframe Discussion List <[email protected]> On Behalf Of TSDunlap Sent: Wednesday, December 23, 2020 11:19 AM To: [email protected] Subject: Re: SMS CDS migration Thanks to all for your assistance. I will do exactly what you all recommended, do a backup of existing and then use the existing on the 2.4 system. Thanks. On 12/23/2020 12:03 PM, Chuck Kreiter wrote: > During our 2.2 to 2.4 migration, we just took a backup prior to the first > system being cut over. I don't believe there is anything special required. > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of TSDunlap > Sent: Wednesday, December 23, 2020 11:28 AM > To: [email protected] > Subject: SMS CDS migration > > We are in the process of switching from z/OS 2.3 to z/OS 2.4. I am wondering > if there is an easy method to transfer SMS CDS definitions between versions? > > -- > ______________________________________________________________________ > __________ > Regards, > Thomas Dunlap Independent Consultant [email protected] cell-614 > 975-4801 > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send > email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send > email to [email protected] with the message: INFO IBM-MAIN -- ________________________________________________________________________________ Regards, Thomas Dunlap Independent Consultant [email protected] cell-614 975-4801 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
