1. A dispersed storage device for use within a dispersed storage network, comprising: an interface; and a processing module operable to: receive, via the interface, a data object to be stored and a user file name of the data object; calculate a data compression function of the data object to produce a compressed data result; create a file identifier different from the user file name for the data object, the file identifier including at least part of the compressed data result; determine vault information based on a user identifier associated with the data object; create a source name for the data object using the file identifier and the vault information; and link the user file name to the source name in a file system directory.