an apparatus is equipped with a source oriented data move technique . in one embodiment , the apparatus is a computer system and the source oriented data moving technique is incorporated in a disk block relocation engine that relocates disk blocks in accordance with the specifications of a disk block relocation vector . in one embodiment , the disk block relocation vector is destination oriented , and the disk block relocation engine is complemented with an transformation function for annotating the destination oriented disk block relocation vector with data source information . the disk block relocation engine then identifies chains of serial disk block moves among the specified disk block moves , and performs the chains of serial disk block moves , keying off the annotated data source information .