Question on what path status Active (I/O) / Active (I/O) means (Esxi 5 with Dell MD3220i)
Posted on 2012-09-20
This may or may not be critical, but I would appreciate your comment on whether the behavior described below is normal and the reason behind it before moving on.
I have a setup of 2 Esxi 5 with single Dell MD3220i, HA enabled. We have configured multipathing (round robin) and everything seemed fine.
Then we started testing the HA. Before triggering the storage controller failover, the path status for the iscsi software adapter from each Esxi 5 was 1 Active, 1 Active (I/O), and 2 Standby (we have 4 paths for each host). After failover to the second storage controller, the path status for the iscsi software adapter from each Esxi 5 was 2 Active (I/O) and 2 Standby. No matter how we rescan on the 2 Esxi 5, it stays this way.
We did not consciously set anything to cause the 2nd controller to operate on 2 ports simultaneously. Is this normal behavior or is there something that we overlooked on either the Vcenter side or the storage side? If this is normal, why the discrepancy between path status of controller 1 versus controller 2?