1. A system comprising: a near-line server coupled to one or more servers that include original data; and a shadowing system coupled to the near-line server and configured to receive a copy of the original data, the shadowing system configured to receive delta data in a plurality of instances, the delta data including information of changes to the original data, the shadowing system configured to dynamically generate and maintain an updated version of the copy at the near-line server by applying the delta data to the copy as the delta data is received.