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; at least a first media management device that identifies first storage locations of first migrated data moved from first storage media to second storage media, the first storage locations of the first migrated data stored in a first index associated with the first media management device; at least a second media management device that identifies second storage locations of second migrated data moved from the first storage media to the second storage media the second storage locations of the second migrated data stored in a second index associated with the second media management device; a backup map stored in computer memory that associates the first migrated data with the first media management device, the backup map further associates the second migrated data with the second media management device; and a retrieval manager that executes in one or more computer processors, the retrieval manager communicatively coupled to the interface module of the first computing device and to at least the first and second media management devices; and wherein in response to a request to retrieve the first and second migrated data, the retrieval manager identifies that the first migrated data is associated with the first media management device based on the backup map, and in response to the retrieval manager directing the first media management device to retrieve the first migrated data, the first media management device retrieves the first migrated data from the second storage media based on the first storage locations of the first migrated data stored in the first index associated with the first media management device; and wherein the retrieval manager identifies that the second migrated data is associated with the second media management device based on the backup map, and in response to the retrieval manager directing the second media management device to retrieve the second migrated data, the second media management device retrieves the second migrated data based on the second storage locations of the second migrated data stored in the second index associated with the second media management device.