Method for increasing file system availability via block...

Details Method for increasing file system availability via block... Method for increasing file system availability via block...

2005-03-30

2009-02-03

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C711S162000

Reexamination Certificate

active

07487386

ABSTRACT:
According to one embodiment, a method is disclosed herein that includes creating a flashcopy of initial replica data, performing a recovery of the created flashcopy, and exporting the recovered flashcopy. In one implementation, the method includes determining whether the initial replica data has changed data, generating an updated flashcopy based on the determination, sequentially quiescing an export of the recovered flashcopy, switching the recovered flashcopy with the updated flashcopy, and exporting the switched flashcopy. In another implementation, the method includes determining whether to reexport a new flashcopy, creating a flashcopy of updated replica data, recovering the flashcopy of the updated replica data, exporting the current recovered flashcopy of the updated replica data, replacing the previously exported recovered flashcopy based on the exportation of the current recovered flashcopy, and deleting the previously exported recovered flashcopy based on the exportation of the current recovered flashcopy.

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patent: WO 2004/025517 (2004-03-01), None

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