13. A system comprising: a near-line server coupled to one or more servers; and a shadowing system coupled to the near-line server and configured to: receive delta data that describes at least one of an incremental and differential change to original data of one or more servers; dynamically and continuously generate and maintain an updated version of a copy of the original data at the near-line server, wherein the generating and maintaining comprise the one or more servers writing ahead information to at least one log file in response to changes in state of the original data, the information including the delta data, the one or more servers shipping the at least one log file to the near-line server, and the near-line server receiving and applying the write-ahead logs in maintaining the updated version; and retro-fit log shipping capability for application data and other structured and unstructured data based in part on the use of an override operation of an application state to allow log files to be applied as they are received, the override operation used in part to prevent a component of the near-line server from entering the application state in which no further log files can be applied; and control the applying using modified information of the component of the near-line server.
13. A system comprising: a near-line server coupled to one or more servers; and a shadowing system coupled to the near-line server and configured to: receive delta data that describes at least one of an incremental and differential change to original data of one or more servers; dynamically and continuously generate and maintain an updated version of a copy of the original data at the near-line server, wherein the generating and maintaining comprise the one or more servers writing ahead information to at least one log file in response to changes in state of the original data, the information including the delta data, the one or more servers shipping the at least one log file to the near-line server, and the near-line server receiving and applying the write-ahead logs in maintaining the updated version; and retro-fit log shipping capability for application data and other structured and unstructured data based in part on the use of an override operation of an application state to allow log files to be applied as they are received, the override operation used in part to prevent a component of the near-line server from entering the application state in which no further log files can be applied; and control the applying using modified information of the component of the near-line server. 35. The system of claim 13 , wherein the shadowing system is configured to generate and maintain in response to at least one of an automatic trigger, a timer notification, an event notification, a poll, and a request.