Patent ID: 7281108

Claim:
A computer-readable medium having instructions recorded thereon that, when executed, perform a method of controlling a migration of a data set stored on at least one source storage resource in a source storage system to at least one target storage resource in a target storage system in a computer system, the method comprising acts of: (A) initiating a migration of the data set so that a first portion of the data set is transferred from the at least one source storage resource and the source storage system to at least one intermediary entity, and from the at least one intermediary entity to the at least one target storage resource; (B) pausing at least a portion of the migration to stop a transfer of at least a portion of the data set from the at least one source storage resource to the at least one target storage resource at a point in the migration where a second portion of the data set has not yet been transferred from the at least one source storage resource to the at least one target storage resource; and (C) resuming the migration so that the second portion of the data set is transferred from the at least one source storage resource and the source storage system to the at least one intermediary entity, and from the at least one intermediary entity to the at least one target storage resource, without re-transferring at least a subset of the first portion of the data set; wherein the at least one intermediary entity comprises at least one component separate from the source and target storage systems.