In a virtual environment using NPIV or vSCSI with a VIOS, enabling the sfwcomm interface requires activating the target mode (the tme attribute) on the real adapter in the VIOS and defining a private VLAN (ID 3358) for communication between the partition containing the sfwcomm interface and the VIOS. The real adapter on the VIOS must be a supported HBA as indicated in the previous reference link.
Note: See the demonstration about creating SAN heartbeating in a virtualized environment:
http://youtu.be/DKJcynQOcn0摘自redbook:《IBM PowerHA SystemMirror for AIX Cookbook》