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 first storage unit, that a storage growth rate is unfavorable for the first storage unit over an estimated time frame of reallocating at least a portion of encoded data slices stored in the first storage unit to one or more additional storage units; when the storage growth rate is unfavorable, selecting an unfavorable growth rate abatement approach such that estimated required storage capacity is less than available storage capacity of the first storage unit for the estimated time frame of the reallocation of the at least a portion of encoded data slices; and facilitating implementation of the unfavorable growth rate abatement approach.