A technique of rebuilding data slices in a dispersed storage network when detecting a plurality of data slices that require rebuilding. A plurality of rebuilding resources capable for use to rebuild the plurality of data slices are determined and based on an attribute associated with the determination, a rebuilding task is apportioned and the apportioned tasks are assigned to the plurality of rebuilding resources to rebuild the data slices. The apportionment of the tasks permit more than one rebuilding resource and associated distributed storage unit to perform the rebuild of the data slices.