Greg, VSAM gives you a new primary extent when you go to a new volume. Setting this to Secondary will change this behavior for extended format VSAM.
For DSORG=PS you get the secondary allocation when you go to a new volume. ACC is a a very kewl way to undo whatever your programmers have done to their JCL without actually having to change the JCL itself. Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of Greg Shirey > Sent: Tuesday, 1 May 2007 10:37 PM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: FW: Do we have to defrag MVS volumes on newer generation disk > arrays? > > Ron, > > Thanks for the list - and it's more than a dozen! I'm happy to see > we're doing a lot of this already but since we have no product like > ACC/SRS (or even HSM) to help, you've mentioned several things we can't > do. Also, we have no production control staff, so JCL is all in the > hands of the programmers, and they "have no time" to go through and > modify it to do better data set allocations. sigh.. > > I did wonder about your number 8 suggestion - this is for extended > format VSAM only, isn't it? I thought that for all other data sets, you > get the primary when you extend to a new volume. > > Greg Shirey > Ben E. Keith Company > ---------------------------------------------------------------------- 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
