1. A dispersed storage managing unit for use within a dispersed storage network, comprising: an interface; memory; and a processing module operably coupled to the memory and the interface, wherein the processing module is operable to: determine that an update is available for a set of storage units that support a virtual memory vault, wherein the virtual memory vault is mapped to the set of storage units, wherein data objects are dispersed storage error encoded into pluralities of sets of encoded data slices that are stored in the set of storage units and wherein, to recover a data object of the data objects, a read threshold number of encoded data slices from each set of encoded data slices of a corresponding set of the plurality of sets of encoded data slices are required; take a first subset of storage units in the set of storage units off line to perform the update, wherein a remaining number of storage units of the set of storage units remain on line such that at least the read threshold number of encoded data slices are available for each set of the pluralities of sets of encoded data slices; and when the update is complete in the first subset of storage units, bring the first subset of storage units back on line.