A computer network remote data mirroring system writes update data both to a local data device and to a local, chronologically sequenced journal storage area, or writelog device. If the local computer system crashes, upon recovery or re-boot of the local computer system, the two most current updates...http://www.google.fr/patents/US6324654?utm_source=gb-gplus-shareBrevet US6324654 - Computer network remote data mirroring system
