1. An information management system configured to generate a snapshot of data relating to a plurality of applications, the system comprising: a plurality of data agents installed at least in part on a client computing device, each data agent associated with at least one of a plurality of applications installed on the client computing device, data generated by the plurality of applications stored in a logical volume in a primary storage subsystem; one or more computing devices comprising computer hardware; and a snapshot manager installed on the one or more computing devices and configured to: detect the plurality of applications installed on the client computing device; receive a first snapshot request from a first application in the plurality of applications at a first time; receive a second snapshot request from a second application in the plurality of applications; detect that the second snapshot request is received within a threshold time period of the first time; check with the plurality of data agents whether the associated applications are in consistent states; in response to receiving notifications from the plurality of data agents that the associated applications are in consistent states, obtain a snapshot of the logical volume to satisfy the first snapshot request and the second snapshot request; generate mapping information between a particular one of the plurality of applications and a portion of the snapshot relating to the particular one of the plurality of applications; and store the snapshot in a secondary storage subsystem.