Patent ID: 8055736

Claim:
A method of maintaining storage area network (‘SAN’) access rights during migration of an operating system between a source server and a physically distinct target server connected to the SAN across physically distinct servers, the method comprising: identifying a virtual SAN interface adapter of a source virtualization intermediary on the source server with a primary world wide port name and a secondary world wide port name; identifying devices coupled for data communications to the source virtualization intermediary through the primary world wide port name; selecting a target physical SAN interface adapter on a target server available to a target virtualization intermediary having a target virtual SAN interface adapter and providing the target virtualization intermediary with the secondary world wide port name; assigning to the target virtual SAN interface adapter the secondary world wide port name; identifying devices coupled for data communications to the target virtualization intermediary through the secondary world wide port name; and responsive to determining that the devices coupled for data communications to the source virtualization intermediary through the primary world wide port name are coupled for data communications to the target virtualization intermediary through the secondary world wide port name, migrating the operating system from the source server to the target server.