MULTI-CHASSIS, MULTI-PATH STORAGE SOLUTIONS IN STORAGE AREA NETWORKS

摘要

Systems and methods in accordance with various disclosed embodiments are provided for multi-chassis, multi-pathing solutions in storage area networks. A physical target connected to a first storage switch can be virtualized as a member of a virtual logical unit at a second storage switch to which the physical target is not connected. An inter-chassis link can be provided between the storage switches. If the first storage switch becomes inaccessible, the physical target can be accessed via the second storage switch. A virtual logical unit can also be provisioned at the first switch with a member corresponding to the same physical target. The virtual logical units provisioned at each storage switch can be assigned the same identifier to create a clustered virtual logical unit apparent to host devices. Multiple paths to the same logical unit are thus provided to host devices via either switch.