Establishment method of remote replication relation and related device

The invention discloses a method for establishing a remote replication relation, and relates to the technical field of computers, and the method comprises the steps: generating a replication link table based on a port group of local equipment, a port group of remote equipment and virtual IP information corresponding to each port group; selecting a corresponding copy link from a copy link table based on the service demand information; and establishing a remote replication relationship between the corresponding local equipment and the corresponding remote equipment based on the replication link, and realizing remote replication. By adopting the copy link table of the port group, the copy link of the application is not a copy link of a fixed IP, and when a fault occurs, rapid switching can be performed based on the virtual IP, so that the fault problem caused by adopting the fixed IP is avoided, and the stability of the remote copy relationship established by the storage system is improved. The invention further