Patent ID: 8078690
Filing Date: 2011-12-13
Classification: G06F,H04L,H04Q

Abstract:
1. A storage system coupled to a switch unit including one or more switch devices, the storage system comprising: a plurality of logical storage devices; one or more physical ports which can be associated with one or more virtual ports; virtual port information for each virtual port, including virtual port identification information of the virtual port and physical port identification information of the physical port associated with the virtual port, wherein the virtual port identification information includes one or more information elements including a virtual port identification (ID) and a virtual port World Wide Name (WWN), and the physical port identification information includes one or more information elements; and a storage processor coupled to the plurality of logical storage devices and the one or more physical ports, the storage processor configured to migrate a migration target virtual port from a migration source physical port to a migration destination physical port by changing the physical port identification information corresponding with the migration target virtual port from physical port identification information of the migration source physical port to physical port identification information of the migration destination physical port, and configured to transmit a port switching request to the switch unit, the port switching request including a port identification information element corresponding with the migration target virtual port; wherein one or more logical storage devices are associated with each virtual port, wherein the switch unit comprises: in cases where the port switching request is received, the switch processor updates the transfer destination information corresponding with the port identification information element in the port switching request to information representing the transfer destination corresponding with the switch port coupled to the migration destination physical port, whereby the virtual port ID and the virtual port WWN of the migration target virtual port are associated with the migration destination physical port instead of the migration source physical port.