A method and system for synchronizing a plurality of data images in a computer system, includes a primary image and at least one secondary image which are synchronized. A host computer issues write requests to a primary image site which is also transmitted to a secondary image site. Writing to the primary...http://www.google.com/patents/US6823349?utm_source=gb-gplus-sharePatent US6823349 - Method and system for establishing, maintaining, and using a persistent fracture log