World Wide Name (WWN)
Definition - What does World Wide Name (WWN) mean?
A World Wide Name (WWN) is a unique identifier assigned by the Institute of Electrical and Electronics Engineers (IEEE) to the manufacturers of network storage products. A manufacturer must include a WWN with all network storage devices.
WWN is also known as World Wide Identifier (WWID).
Techopedia explains World Wide Name (WWN)
A WWN is primarily implemented in SANs with multiple attached storage devices, which helps system administrators (SA) uniquely categorize and identify storage segments.