Disclosed is a system and method for caching data. A processor receives data from a host to modify a track in a first storage device. The processor stores a copy of the modified data in a cache and indicates in a second storage device the tracks for which there is modified data in cache. During data...http://www.google.de/patents/US6513097?utm_source=gb-gplus-sharePatent US6513097 - Method and system for maintaining information about modified data in cache in a storage system for use during a system failure
