A method includes obtaining a data object for storage. The method further includes generating a data object identifier for the data object. The method further includes determining a vault for storing the data object. The method further includes generating a source name for the data object based on the data object identifier and a vault identifier. The method further includes dispersed storage error encoding the data object to produce a plurality of sets of encoded data slices. The method further includes generating a plurality of sets of slice names, wherein each of the slice names of the plurality of slice names includes the source name. The method further includes sending, in accordance with the plurality of sets of slice names, the plurality of sets of encoded data slices to a set of storage units of the DSN that supports the vault for storage therein.