A method and system for discovering the location of a storage router, and
therefore the attached storage devices, in a fibre channel network using
the storage router's fully qualified domain name to ultimately determine
the storage router's arbitrated loop physical address (AL_PA). An Internet
protocol domain name query containing the fully qualified domain name is
sent from a host computer over the storage area network to a domain name
server to determine an Internet Protocol address for the storage router.
The domain name server replies with the storage router Internet Protocol
address. The host computer then sends an address resolution protocol
request containing the Internet protocol address over the storage area
network to determine a node name for the storage router. The storage
router replies with its node name. The host computer then sends an FCP
request containing the storage router's node name over the storage area
network to determine an arbitrated loop physical address of the storage
router. The storage router replies with its arbitrated loop physical
address. The host computer can use a variety of standard inquiries
discover storage devices attached to the storage router. The communication
can then continue in fibre channel protocol between the storage and the
host computer.