1. A data retrieval system comprising: a first computing device having a processor that supports operation of a software application and an interface module for retrieving data for the software application; a plurality of second computing devices comprising media management devices device communicatively coupled to the first computing device and to a plurality of storage media for storing the data, wherein the storage media comprises a plurality of different media types and the media management devices are configured to store data in different formats on the different types; a plurality of data indexes, each of the plurality of data indexes stored on one of the plurality of media management devices, wherein each index indicates a particular location of the data for one or more storage media that is to be retrieved by the interface module of the first computing device; and a third computing device communicatively coupled to the interface module of the first computing device and to the plurality of media management devices, the third computing device storing a storage and backup map that identifies which of the plurality of indexes has the particular locations of the data when the data is migrated from a first storage media type to a second storage media type.