A、 NPIV provides a means to assign multiple Fibre Channel IDs to a single N-port.

B、 NPIV can be enabled on a per-VSAN basis.

C、 NPIV requires a "write erase" and then reload the switch in order to come up into NPIV mode. 

D、 NPIV is a Cisco proprietary feature and as such works only between two Cisco switches.

E、 NPIV must not be enabled on a switch that is also running N-port virtualization.