Abstract: A system for data indexing includes memory and at least one computing device in communication with the memory. The computing device can store data objects in the memory. The computing device can assign an importance level to, or determine an applicable policy for, each data object by at least analyzing each data object to determine an importance level for each data object, designate each data objects having a high importance level as a first-tier data object, and designating each data object having a low importance level as a second-tier data object. The computing device can store subject data for the data objects by at least storing a first amount of subject data for each first-tier data object and a second amount of subject data for each second-tier data object, where the second amount of subject data is less than the first amount of subject data.