1. A method of migrating data stored in logical units of storage (LUNs) at a plurality of source storage arrays into one destination storage array transparently with respect to a host in communication with the source storage arrays through a switch, the method comprising: copying, during a data migration event, data stored in a LUN of a first source storage array to a first corresponding LUN of the destination storage array; and copying data stored in a LUN of a second source storage array to a second corresponding LUN of the destination storage array.