A dispersed storage device within a dispersed storage network includes a processing module for determining whether to add a new generation for a vault, in which the vault identifies at least one user having data to be stored. When the new generation is to be added to the vault, the processing module further assigns a vault generation identifier to the new generation, assigns a virtual address range of a virtual memory associated with the dispersed storage network to the new generation and maps the virtual address range to a physical memory for storage of the data therein.