You have designed a new SAN fabric for a customer. The fabric constists of CISCO MDS 8/24c Fabric switches for HP Bladesystem c class . Which feature allows automatic mapping of physical WWNs to…

FlexFabric is a branding for Hewlett Packard Enterprise's (HPE) converged network infrastructure, not a specific Cisco feature for WWN mapping.

Cisco FlexAttach is a feature designed to virtualize HBAs in blade server environments, such as HP BladeSystem c-Class, providing persistent network identities. It accomplishes this by automatically mapping the physical World Wide Names (WWNs) of server HBAs to virtual WWNs using a Network Address Translation (NAT)-like mechanism, simplifying server provisioning and maintaining consistent storage zoning regardless of physical hardware changes.

Virtual Domain (or VSAN in Cisco Fibre Channel parlance) is used for segmenting a Fibre Channel fabric into logical partitions for isolation and management, not for WWN NAT.

Access Gateways (or N_Port Virtualization - NPIV/NPV mode) allow an edge switch to act as a proxy to the core fabric, simplifying management, but FlexAttach is the specific Cisco feature providing WWN NAT for blade servers.