The data class is an initial source of data set attributes. The vast majority of data set attributes are stored in the VTOC/VVDS and catalog entries when it is allocated, therefore changing the data class after the data set has been allocated does not change its attributes.
> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of Mark Jacobs > Sent: Wednesday, June 05, 2013 8:29 AM > To: [email protected] > Subject: Re: Calls to SMS Data Class ACS Routine > > Understood. Can anyone give me some ideas on how to copy ZFS file > systems from non-EAV volumes to EAV volumes when the Data Class that > they're defined with doesn't have EATTR(OPT) assigned? > > I'm a little leery having our Storage Admin change the existing Data > Class, I'd rather have the datasets use a new one. > > Mark Jacobs > > > On 06/05/13 08:07, Elardus Engelbrecht wrote: > > Mark Jacobs wrote: > > > >> Logical copy without a replace. > >> The newly allocated SYSZFS dataset gets assigned the correct storage and > management class, but the data class assigned isn't from the ACS routine, but > from the source dataset. > >> I know the SMS routines are working since a regular allocation of a SYSZFS > dataset in JCL assigns all the expected attributes. > > Thanks. I had to RTFM and check my old DFDSS jobs, but I think this part > from DFSMSdfp Storage Administration applies: > > > > "For the COPY command (&ACSENVIR='ALLOC') and the RESTORE command > (&ACSENVIR='RECOVER'), the storage class ACS routine is executed first. If > the storage class is not null, the management class ACS routine and then the > storage group ACS routine are executed." > > > > Seemed nothing is said about data class... UnlessI miss something... > > > > Look at O'Brien, David W. reply too. > > > > Groete / Greetings > > Elardus Engelbrecht > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to [email protected] with the message: INFO IBM-MAIN > > > > > > > -- > Mark Jacobs > Time Customer Service > Tampa, FL > ---- > > The quiet ones are the ones that change the universe... > The loud ones only take the credit. > > Londo Mollari - Babylon 5 > > ---------------------------------------------------------------------- > 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
