Applies to ONTAP 9 Answer A LIF (Logical InterFace) is a logical resource tied to a Vserver A NAS LIF has an IP address A SAN LIF has a WWPN A LIF is hosted by a physical network port on a node ... Applies to ONTAP 9 Answer A LIF (Logical InterFace) is a logical resource tied to a Vserver A NAS LIF has an IP address A SAN LIF has a WWPN A LIF is hosted by a physical network port on a node This separation of the physical port and the LIF allows a NAS LIF to migrate non-disruptively to another physical port on node within the cluster. Additional Information For further information, see ONTAP documentation: What are LIFs?