1. A storage integrity processing unit in a dispersed storage network, comprises: a network interface for interfacing with a plurality of storage units in the distributed storage network; and a grid module including: a rebuild agent operably coupled to: receive an identification of an identified data slice that requires rebuilding from a corresponding one of the plurality of storage units, wherein the identified data slice is one of a plurality of encoded data slices generated from a data segment using an error encoding dispersal function; and retrieve at least a number T of the plurality of encoded data slices from the plurality of storage units, wherein the number T corresponds to a number of the plurality of encoded data slices needed to reconstruct the data segment based on the error encoding dispersal function; and a rebuild module operably coupled to reconstruct the data segment from at least the number T of the plurality of encoded data slices to produce a reconstructed data segment; and generate a rebuilt encoded data slice corresponding to the identified data slice from the reconstructed data segment using the error encoding dispersal function.