An apparatus or method that tracks the identity of stripe units or group of stripe units from which data has been previously read by an application program running on a computer system. In one embodiment, the present invention stores the identity of previously read stripe units or groups of stripe units...http://www.google.com/patents/US7234024?utm_source=gb-gplus-sharePatent US7234024 - Application-assisted recovery from data corruption in parity RAID storage using successive re-reads