Hi Tony,
MVS TK4 was generated with FEATURE=SHARED on all DASD, and when I did the sysgen for VS1 6.7 I also used FEATURE=SHARED.
I'm only concerned about VTOC updates. I have no intention nor any applications that try to do multi-write access to a common dataset to both systems for example. Again, this is just to simply by allowing TSO to edit a VS1 PARMLIB member (for example) to avoid the need to otherwise update that member with a batch job executed within VS1. It's perfectly safe to create or delete datasets on VS1 volumes using MVS TSO (although the VS1 catalog won't know about the operation), with FEATURE=SHARED on both systems and MWV on the MDISK statements in the CP directory.
Regards,
Bob
