Electrical computers and digital processing systems: multicomput – Computer-to-computer data addressing
Reexamination Certificate
2005-01-25
2005-01-25
Luu, Le Hien (Department: 2141)
Electrical computers and digital processing systems: multicomput
Computer-to-computer data addressing
C709S249000, C710S003000
Reexamination Certificate
active
06848007
ABSTRACT:
The present invention provides a method and system for mapping addressing of SCSI devices between two SANs connected by a SAN extender over a packet-based network with use of a Fibre channel protocol over large distances. The present invention seamlessly interconnects graphically distinct SANs such that they operate as if they were local to one another by providing a means to generically and dynamically map SCSI device addresses between two SANs. The present invention provides a method and system for accessing a device from a host, wherein the host and device are in separate SANs interconnected by a transport layer, and wherein the interface between said transport layer and each of said SANs is a node. This method comprises, at each node, the steps of: mapping the device address into an intermediary device identifier, and mapping the intermediary device identifier into an address accessible by the host. Each node can be a Fibre channel-to-SCSI router, and the intermediary device identifier can comprise a node identifier and a generic device identifier. The transport layer can be a packet-based network.
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International Search Report of corresponding PCT Application No. PCT/US00 30959 dated Jun. 13, 2001.
Haechten John B.
Reynolds Robert A.
Smeltzer Kenneth D.
Crossroads Systems Inc.
Luu Le Hien
Sprinkle IP Law Group
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