Data processing: database and file management or data structures – File or database maintenance – Database backup
Reexamination Certificate
2011-07-12
2011-07-12
Fleurantin, Jean B. (Department: 2162)
Data processing: database and file management or data structures
File or database maintenance
Database backup
Reexamination Certificate
active
07979396
ABSTRACT:
A method involves detecting that a first storage device is inaccessible. The information stored on the first storage device is a synchronized copy of information stored on a second storage device. In response to detecting that the first storage device is inaccessible, modification logging is initiated. Modification logging involves detecting modifications to information stored on the second storage device and storing information that indicates an order in which the modifications occur to the second storage device. The stored information can indicate the order explicitly (e.g., by including a timestamp or sequence number) or indirectly (e.g., the order of entries stored in a log can indicate the order of the modifications represented by those entries). The stored information can also include the new values generated by the modifications. The stored information can then be used to resynchronize the information stored on the first and second storage devices.
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Krishnamurthy Raghu
Pande Arvind Arun
Tawri Deepak
Campbell Stephenson LLP
Fleurantin Jean B.
Kerzhner Aleksandr
Symantec Operating Corporation
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