1. A computer storage system comprising: a storage subsystem comprising a plurality of existing volumes; a plurality of slices within said plurality of existing volumes; an originally configured internal intelligence software layer interfacing with said plurality of existing volumes; a plurality of virtual data storage units for independent access; and a virtualization software layer interfacing with said originally configured internal intelligence software layer for access to said plurality of existing volumes via said plurality of virtual data storage units by translating between said plurality of virtual data storage units, said plurality of slices, and said plurality of existing volumes.