System and method for archiving objects in an information store

[0036]Embodiments of methods and systems according to the present invention are described through references to FIGS. 1 though 5. A network architecture for a system to archive and retrieve application specific objects in accordance with embodiments of the present invention is depicted in FIG. 1. As shown, the system includes a storage manager 125 and one or more of the following: a data agent 105, a client computer 107, a first information store 108, a stubbing module 109, a media agent 110, a secondary storage library 115, and an index cache 120. The system and elements thereof are exemplary of a three-tier backup system such as the CommVault Galaxy backup system, available from CommVault Systems, Inc. of Oceanport, N.J., and further described in application Ser. No. 09 / 610,738 which is incorporated herein by reference in its entirety.

[0037]A data agent 105 is a software module that is generally responsible for archiving, migrating, and recovering data of a client computer 107. Eac