- World Wide Name
A World Wide Name (WWN) or World Wide Identifier (WWID) is a unique identifier in a
Fibre Channel orSerial Attached SCSI storage network. Each WWN is an 8-byte number derived from anIEEE OUI (for the first 3 bytes) and vendor-supplied information (for the rest).There are two formats of WWN defined by the IEEE:
* Original format: addresses are assigned to manufacturers by the IEEE standards committee, and are built into the device at build time, similar toEthernet MAC address . First 2 bytes are either hex 10:00 or 2x:xx (where the x's are vendor-specified) followed by the 3-byte vendor identifier and 3 bytes for a vendor-specified serial number
* New addressing schema: first half-byte is either hex 5 or 6 followed by a 3-byte vendor identifier and 4 bytes and a half for a vendor-specified serial numberList of a few WWN company identifiers
*00:50:76
IBM
*00:A0:98 NetApp
*00:60:69Brocade Communications Systems
*00:05:1EBrocade Communications Systems , formerly owned byRhapsody Networks
*00:60:DFBrocade Communications Systems , formerly CNT Technologies Corporation
*00:E0:8BQLogic HBAs, original identifier space
*00:1B:32QLogic HBAs. new identifier space starting to be used in 2007
*00:C0:DDQLogic FC switches
*00:90:66QLogic formerly Troika Networks
*00:11:75QLogic formerly PathScale, Inc
*08:00:88Brocade Communications Systems , formerly McDATA Corporation. WWIDs begin with 1000.080
*00:60:B0Hewlett-Packard - Integrity and HP9000 servers. WWIDs begin with 5006.0b0
*00:11:0AHewlett-Packard - ProLiant servers. FormerlyCompaq . WWIDs begin with 5001.10a
*00:01:FEHewlett-Packard - EVA disk arrays. FormerlyDigital Equipment Corporation . WWIDs begin with 5000.1fe1
*00:17:A4Hewlett-Packard - MSL tape libraries. Formerly Global Data Services. WWIDs begin with 200x.0017.a4
*00:60:48 EMC, for Symmetrix
*00:60:16 EMC, for CLARiiONSee also
*
Fibre Channel
*Switched fabric
*World Wide Port Name (WWPN)
*World Wide Node Name (WWNN)External links
* [http://standards.ieee.org/regauth/oui/tutorials/fibreformat.html Guidelines for Fibre Channel Use of the Organizationally Unique Identifier (OUI)]
* [http://standards.ieee.org/regauth/oui/oui.txt IEEE OUI list]
Wikimedia Foundation. 2010.