Provided are a method, system, and program for maintaining consistency when mirroring data using different copy technologies. Update groups having updates to primary storage locations are formed using a first copy technology. The updates in the update groups are copied to secondary storage locations....http://www.google.fr/patents/US7552295?utm_source=gb-gplus-shareBrevet US7552295 - Maintaining consistency when mirroring data using different copy technologies
Maintaining consistency when mirroring data using different copy technologies