In one aspect, a method to recover data includes annotating metadata entries in a journal to indicate changes by an application to an object stored in a continuous data protection environment. Each entry of the metadata corresponds to one of a unique group of DO stream data blocks or a unique group of...http://www.google.com/patents/US7860836?utm_source=gb-gplus-sharePatent US7860836 - Method and apparatus to recover data in a continuous data protection environment using a journal
