Don't forget, for a pds, it is space=(unit,(pri,sec,dir)); you also need to specify directory blocks.
Bill On Wed, 8 Apr 2009 10:33:55 -0400, larry macioce <[email protected]> wrote: >Sorry about the incomplete data,it is for a pds and what I am looking at >space=(xxx(pri,sec))thanks >Larry > >On Wed, Apr 8, 2009 at 10:27 AM, Spencer, Mike <[email protected]> wrote: > >> Larry, >> Depends on the OS and SMS versus non-SMS. Extended PS is the same as VSAM >> (123 extents/vol) and max of 59 vols, for total of 7,257. Prior to z/OS 1.7, >> the VSAM extent limit was 255 total. There is a dataclass option to enforce >> this 255 limit if users share the VSAM dataset with older releases of z/OS. >> The VSAM limit of 255 extents is still enforced for any non-SMS-managed data >> set. The system reserves the last four extents for extending a component >> when the system cannot allocate the last extent in one piece. Non-SMS >> datasets still play by the old rules. >> >> Michael Spencer >> BMC Software >> >> -----Original Message----- >> From: IBM Mainframe Discussion List [mailto:[email protected]] On >> Behalf Of larry macioce >> Sent: Wednesday, April 08, 2009 10:04 AM >> To: [email protected] >> Subject: Secondary space allocation >> >> I was doing some reading,which is scary in it's own right, and came across >> something that I need to verify.I always thought when you gave a secondary >> space allocation that it went to 16 extents(if needed), but I am reading >> that it now goes to 123. >> Is this true?? We are a non sms shop. >> One more question, does the system check for all secondary allocations or >> will it work 1 by 1 as needed? >> thanks >> Larry >> ---------------------------------------------------------------------- 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
