1. A method for performing data management operations in a computer network, the method comprising: monitoring operations associated with a source computing device, the operations operative to write data to a source storage device; copying the data to a destination storage device based at least in part on the operations, the data comprising at least one first stub file; scanning the data of the destination storage device to identify a common data object repeated between multiple portions of the data on the destination storage device; archiving a copy of the common data object on a second storage device; determining a last access time of each of the multiple data portions of the destination storage device having the common data object; and for each of the multiple data portions having a last access time at or before the time of the archiving of the copy of the common data object, replacing the common data object of the particular data portion with a second stub file, wherein the second stub file comprises a tag value not possessed by any of the at least one first stub file, and wherein the second stub file comprises information indicative of a location of the copy of the common data object.