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1 TadSmith commented Permalink

Can you elaborate at all on why you shouldn't do this for the DS3/4/5K systems? I am trying to cleanup some of my zoning. I haven't seen anything in the IBM RedBooks/Documentation that indicates the controller ports shouldn't see each other. I haven't seen anything that says it is safe either, though.

2 anthonyv commented Permalink

Hi. <div>&nbsp;</div> The requirement to not zone controllers together was certainly stated in earlier Redbooks. <br /> The reason is that the ports run in both initiator mode (for replication) and target mode. <br /> When the controllers see each other they try and login to each other, which achieves nothing. <br /> I believe it could also cause machine stability issues. <br /> These might all be historical... but I would keep to splitting the controllers so they cannot see each other, <br /> especially as it cannot hurt....