On Tuesday, 09/21/2010 at 04:42 EDT, "O'Brien, Dennis L" <dennis.l.o'[email protected]> wrote: > z10's were available quite awhile before z/VM 6.1.0 was. I'd find it hard to > believe that the z/VM lab didn't have a real z10 to test 6.1.0 on. I suspect > there was a time when they emulated a z10 on a z9, but to my knowledge, IBM > doesn't make that software available to customers.
(sorry - late to the party) z/VM 6.1 was indeed tested on a z10. During its development it ran on a z9 right up to the point where the code that exploits z10 instructions was added. On that day, all z9 and earlier test systems could no longer run z/VM 6.1. Since we knew that day was coming, we used the previous capital planning/budget cycle to upgrade/consolidate test machines. At no time did we emulate a z10 on a z9. When we say "z/VM 6.1 requires a z10 or later" we mean it. Alan Altmark z/VM and Linux on System z Consultant IBM System Lab Services and Training ibm.com/systems/services/labservices office: 607.429.3323 [email protected] IBM Endicott
