Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2004-07-13
2008-12-02
Pham, Khanh B. (Department: 2162)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000
Reexamination Certificate
active
07461101
ABSTRACT:
A method for reducing data loss and unavailability by integrating multiple levels of a storage hierarchy is provided. The method includes receiving a read request. In addition, the method includes recognizing a data failure in response to the read request. The method further includes locating an alternate source of the data to be read in response to recognizing the data failure. The alternate source includes data cached at devices in the storage hierarchy, data in a backup system, and cumulative changes to the data since the last backup. Moreover, the method includes responding to the read request with data from the alternate source.
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Hsu Windsor Wee Sun
Ong Shauchi
Palmer John Davis
International Business Machines - Corporation
Le Thu-Nguyet
McCabe Mark C.
Nunnelley Lewis
Pham Khanh B.
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