1. A method for execution by one or more processing modules of one or more computing devices of a dispersed storage network (DSN), the method comprises: determining, by a plurality of rebuild modules, to rebuild one or more encoded data slices that are stored, or to be stored, in a DSN memory unit of a set of DSN memory units, wherein a data segment of data is dispersed storage error encoded to produce a set of encoded data slices that is stored in the set of DSN memory units, wherein the set of encoded data slices includes at least one of the one or more encoded data slices, and wherein a decode threshold number of encoded data slices of the set of encoded data slices is required to reconstruct the data segment; determining, by at least one of the plurality of rebuild modules, a rebuild rate of the DSN memory unit, wherein determining the rebuild rate includes determining a number of the plurality of rebuild modules concurrently rebuilding encoded data slices for the DSN memory unit and their respective rebuild rates; determining, based on the rebuild rate, a rebuild rate status of a plurality of rebuild rate statuses of the DSN memory unit, wherein a high rebuild status of the plurality of rebuild rate statuses indicates that a collected traffic rate to network capacity rate of the DSN memory unit is above a first threshold and a low rebuild status of the plurality of rebuild rate statuses indicates that the collected traffic rate to network capacity rate of the DSN memory unit is below a second threshold, wherein the collected traffic rate includes at least the rebuild rate and a regular access traffic rate, and wherein the first threshold is greater than the second threshold; and when the rebuild rate status is the high rebuild status, reducing the rebuild rate to the DSN memory unit such that the collected traffic rate to network capacity rate is below the first threshold, the reducing including one or more of: reducing the number of the plurality of rebuild modules concurrently rebuilding encoded data slices to the DSN memory unit or reducing rebuild rates of one or more of the plurality of rebuild modules; and rebuilding, when the rebuild rate is not reduced to zero, the one or more encoded data slices to produce one or more rebuilt encoded data slices; and sending, the one or more rebuilt encoded data slices to the DSN memory unit for storage.