The steps are provides you to view WWN HBA on HP UX. When peoples are using Storage Area Network (SAN) with FC then SAN can do scanning all connected FC in the SAN Switch.

From SAN storage they can get the World Wide Name (WWN) of the HBA –each HBA has unique WWN (same as MAC Address in the PC), but if there are many servers connected the FC into the same SAN Switch, might be they can get difficulties which server has particular WWN.

Scan I/O with class FC

levicorp:> ioscan -knfC fc

Class I H/W Path Driver S/W State H/W Type Description

fc 0 0/2/1/0 td CLAIMED INTERFACE HP Tachyon XL2 Fibre Channel Mass Storage Adapter
/dev/td0

fc 1 0/3/1/0 td CLAIMED INTERFACE HP Tachyon XL2 Fibre Channel Mass Storage Adapter
/dev/td1

Output of this program is showing your WWN number.