Shalom,
1) Make sure the HBA card is working. See that the card shows on ioscan and such. Any disk presented to the system should show up.
2) Have the SAN zoning checked, this is done by World Wide Name in the aforementioned HBA card. Use fcmsutil to get the information.
3) Check the cabling and cards and connections with a physical inspection.
SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com