Hi All,
How it the multipath setting initially set on the datastores? Does the storage decide? We have been seeing degraded performance from IO latency, and a 3PAR support rep recently suggested changing to Round Robin from the default MRU we were running on the 3PAR luns. I'm not sure how this will help because I didn't think Round Robin was link aggregation, rather just rotating paths for pushing IO down.
Anyway, when I checked my paths from an EMC device we also have, they were already set to Round Robin, so I was wondering if the array sets this, and if so, why 3PAR suggests something different than their array sets by default.