There is disclosed a method performed by a computer system for managing a location of an object in a hierarchical storage that includes a plurality of storage layers. In the method, the computer system receives a selection of one storage layer for storing a selected object from among the plurality of the storage layers via a network connected to the computer system. The computer system also moves the selected object to the one storage layer from other storage layer currently that stores the selected object among the plurality of the storage layers. The computer system further excludes the selected object from targets of a predetermined space management that is being applied to objects in the hierarchical storage.