1. A computer-implemented method of identifying potentially similar content for data reduction, comprising: receiving content workflow metadata corresponding to content to be processed, wherein the content to be processed includes a data component, and wherein the content workflow metadata represents workflow processing information corresponding to the data component; receiving known content workflow metadata corresponding to a first plurality of known content, wherein each known content includes a known data component, and wherein the known content workflow metadata represents workflow processing information corresponding to each respective known data component; determining a potential similarity between the data component of the content to be processed and at least one known data component of at least one of the first plurality of known content based on a similarity between the respective content workflow metadata and the respective known content workflow metadata; and outputting an identification of potentially similar content, based on the determined potential similarity, for use in reducing data in the content to be processed.