1. A method for execution by a dispersed storage processing module, the method comprises: sending a plurality of dispersed storage (DS) write commands to plurality of dispersed storage (DS) units for storing a plurality of encoded data slices; receiving, within a time period, acknowledgements from at least some of the plurality of DS units to produce received acknowledgements; determining whether a number of received acknowledgements compares favorably to a write threshold; and when the number of received acknowledgements does not compare favorably to the write threshold, changing at least one of the write threshold and at least one of the plurality of DS units.