Hello Lizette Thanks for the great explanation
I am trying to make the KSDS as multivolume using extended addressability above 4.2G. The KSDS tends to grow in our shop So what would be your suggestion on the allocation for the above scenario. How much should I go for the data and index ? On Wed 11 Apr, 2018, 1:27 AM Lizette Koehler, <stars...@mindspring.com> wrote: > - Ok This is one of my buttons > > PRI = 1000 > SEC = 500 > > The best practice in todays storage arena, is to allocate the small on > Primary and Large on Secondary > > Why - because the primary allocation can take away for the number of > secondary allocations that can be made > Because the Primary allocation can only be obtained once and upto > 5 extents to acquire it > > But using a small primary and large secondary you provide breathing room > for your dataset > > Also, you might want to calculate how much storage you might need and > determine the allocation needed from it > > > So for this file, I would recommend, Primary = 100 Secondary = 1000. > Then monitor the file for growth. If it looks like it is taking on too > many secondary extents, then reallocate and double or triple the secondary > > If it is truly going to be over 4gb - then make the secondary huge > > > > Lizette > > > -----Original Message----- > > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On > Behalf Of > > Peter > > Sent: Tuesday, April 10, 2018 10:49 AM > > To: IBM-MAIN@LISTSERV.UA.EDU > > Subject: Dummy question on VSAM multivolume > > > > Hi > > > > I have defined a KSDS with primary 1000 and secondary 500 with the > extended > > addressability. > > > > It got created as multivolume with 2 volcount. > > > > Can I alter volume count ? > > > > Peter > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, send > email to > > lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
