We migrated all of our mainframe DASD from an old unit to a new one last year. We thought we would move practically all of the z/OS disks from mod 3's to mod 9's (and we did).
One big technical challenge how to "fill up" a mod 9 from 2 or 3 mod 3's. We used a great OEM tool to simply move everything it could move onto the back 2/3 of a mod 9. Unfortunately it didn't support MOVING multi-volume VSAM files. These we had to COPY to new name, delete old, copy back to old name, etc. by explicit dsn. The other discovery was that at z/OS V1.4, a page dataset could not be allocated large enough to fill a mod 9 disk. We are still using mod 3's for local page datasets. WLM controlled PAV's might, however, allow multiple local page datasets on a single mod 9. However, I believe IBM has said on this forum that the BCP would only use 2 PAV's for paging. Ben Alford Enterprise Systems Programming University of Tennessee ---------------------------------------------------------------------- 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
