First, thanks for the answer. Yes, I also have used the Express Guide. For vSphere 5.5 and E2700 series seems that any command has to be run in the hosts to customize the NMP or VAAI claim rules. Also I configured the zoning in the switches following its recommendation (Single Initiator-Multiple Target). As far as I can see the zoning seems to be ok. The Storage seems to work well too, and is only reporting an alarm when the LUN is automatically moved to the non preferred-controller. I have only seen this when I copy data across two LUNS that are in different preferred controllers. Seems that AVT is playing a role in this behavior, but I still don't understand how.
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