A method is disclosed for reliably updating a data group in a read-before-write data replication environment. The method reliably updates the data group by receiving an updated data group sent from a first storage medium to a second storage medium, comparing the updated data group with a previous data...http://www.google.com.tw/patents/US20090043826?utm_source=gb-gplus-share專利 US20090043826 - Method for Reliably Updating A Data Group In A Read-Before-Write Data Replication Environment Using A Comparison File
