I'm getting my head around CNAs. My understanding is.
They are a requirement for Fcoe, if you use one you can send FCoE traffic, iscsi, file based NAS traffic down one 10GbE network cable to a converged switch which will then decapsulate the FCoE frames and send them to the storage array via normal FC.
Essentially you have one port handling all your storage traffic. iscsi fcoe nfs cifs.
Is this correct?