GENERATION AND USE OF A TIME MAP FOR ACCESSING A PRIOR IMAGE OF A STORAGE DEVICE

The invention relates to systems, methods, and articles of manufacture for generating an image of a data store at a past time by using a map (e.g., a time map) of the locations of data stored in the data store at the specified past time. The map allows the data storage system to quickly determine the locations of data stored in a data store at a past time, without searching the entire index of records concerning the locations of the past data.