A method and apparatus for delaying the process of freeing data blocks during the processing of a non-volatile transactions log are disclosed. Accordingly, after a system failure, when a storage system is replaying transactions in a non-volatile transactions log, the storage system flushes the data generated...http://www.google.com.hk/patents/US7805632?utm_source=gb-gplus-share專利 US7805632 - Storage system and method for rapidly recovering from a system failure
