What is WWN World Wide Name?

A World Wide Name (WWN) is a unique identifier assigned to storage devices in a network, primarily used in Fibre Channel networks. It serves to distinguish each device, such as storage arrays or host bus adapters, ensuring proper communication and data routing within the storage area network (SAN). The WWN is similar to a MAC address in networking, providing a persistent identity that remains constant even if the device is moved to a different location.