Hi Stef,
RDAC drives me crazy from time to time. Could you post the output of "lsattr -E -l <item>" for each of your dacs and dar? Also, could you comment on how your SAN is zoned? From what you said, I made the assumption that you are connecting via a switch or director rather than direct attaching from the HBAs in your pSeries box to the host ports on your DS4000.
Regards,
Scott |