Certain embodiments described herein relate to an improved synthetic full backup image generation system. In some embodiments, one or more components in an information management system can identify a file-server-created backup copy in a particular backup format of a plurality of backup formats, determine structure information associated with the particular backup format, and generate a synthetic full backup copy according to the structure information, where the synthetic full backup copy is also in the particular backup format identical to that of the file-server-created backup copy.