1. A method for execution by one or more processing modules of one or more computing devices of a dispersed storage network (DSN), the DSN having storage resources including a first set of storage units and a second set of storage units, the first set of storage units configured as an internal storage vault, the method comprises: receiving a data object for storage; determining, based on at least one performance criterion, to store the data object in the internal storage vault as opposed to the second set of storage units; dispersed storage error encoding the data object, in accordance with dispersal parameters associated with storage of data in the internal storage vault, to produce a plurality of sets of performance encoded data slices, wherein the data object is segmented into a plurality of data segments and wherein each data segment is dispersed storage error encoded into a respective set of performance encoded data slices; and facilitating storage of the plurality of sets of performance encoded data slices in the internal storage vault.