1. A data management method, comprising: receiving multiple user files from at least one client station coupled to a data storage subsystem; storing at least some of the multiple user files in a retrieval storage pool at a first location in the data storage subsystem; creating a managed file comprising an aggregation of at least some of the multiple user files; applying first predetermined criteria to a user file stored in the retrieval storage pool to designate the user file in the retrieval storage pool as one of a higher priority and a lower priority; and deleting from said retrieval storage pool a user file designated as lower priority.