In a system in which read data tracking and caching is used to recover from data corruption, a first request to read data from a primary data mirror is received from a computer system. Data is read from the primary data mirror in response to receiving the first request. Additionally data from a mirrored...http://www.google.de/patents/US7028156?utm_source=gb-gplus-sharePatent US7028156 - Use of read data tracking and caching to recover from data corruption