Define as many physical volumes as you need(separate from the IBM defined volumes), And apportion *all* of the logical volumes to the "new" physical volumes.
The dialogs will tell you if too much data has been allocated to a particular physical volume. HTH, <snip> I'm doing the z/OS 1.13 installation with Z9BC and DS6800(3390 mod3) I have revd and installing it. I'm in MODIFY SYSTEM LAYOUT section. Even we have 10 volumes in the LPAR, It just displays only 3 volumes in “Physical volume summary” option of MODIFY SYSTEM LAYOUT. So that when i proceed with Automatic system layout option, its not able to allocate all the datasets. Getting space issue. </snip> ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN