SEAMLESS I/O IN FIBRE CHANNEL POINT TO POINT TOPOLOGY WHILE A STORAGE PORT IS CHANGED

A computer-implemented method, a computer program product, and a computer system for seamless I/O in Fibre Channel point to point topology while a target (or storage) port is changed. The target returns a first World Wide Port Name for a first target port to a pool of World Wide Port Names for ports on the target, in response to detecting that a Fibre Channel link between an initiator port and the first target port is down. The target detects a connection between the initiator port and a second target port. The target determines whether the initiator port issues a request of an initiator initiated Fabric login for connecting to the second target port. In response to determining that the request is issued, the target performs the initiator initiated Fabric login. In response to determining that the request is not issued, the target performs a target initiated Fabric login.