Patent ReferencesMethod and arrangement for multi-system remote data duplexing and recovery Method and apparatus for performing point in time backup operation in a computer system Method and system for updating replicated databases in a telecommunication network system System and method for real-time data backup using snapshot copying with selective compaction of backup data Synchronizing recovery log having time stamp to a remote site for disaster recovery of a primary database having related hierarchial and relational databases Method of automatically synchronizing mirrored database objects Administration of a differential backup system in a client-server environment Remote data mirroring system using local and remote write pending indicators Patent #: 6647474 InventorAssigneeApplicationNo. 10044327 filed on 01/10/2002US Classes:711/162, Backup711/161, Archiving707/204Archiving or backupExaminersPrimary: Moazzami, NasserAttorney, Agent or FirmInternational ClassG06F 1200AbstractMethods and apparatus for point-in-time volumes are provided. A relationship is enabled between a source volume and point-in-time volume. Copying a data chunk to the point-in-time volume before a write operation modifies the data chunk on the source volume dynamically creates the point-in-time volume. The point-in-time volume can be accessed in read/write mode as a general purpose data storage volume. Other embodiments comprising additional features, such as a forced migration process, are also provided.Other References
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