Method and apparatus for performing point in time backup operation in a computer system
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United States of America Patent
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Jan 5, 1999
Grant Date -
N/A
app pub date -
May 31, 1996
filing date -
May 31, 1996
priority date (Note) -
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Abstract
A data network with a remote data facility for providing redundant data storage and for enabling concurrent point-in-time backup operations. A local data processing system with a data facility stores a data base and processes applications. A second system, physically separated from the first system, includes a data facility that normally mirrors the data in the first system. In a backup mode, the second system is enabled to transfer data from its data facility to a backup facility concurrently with, but independently of, the operation of the first system. On completion of the backup operation, the second system reconnects with and synchronizes with the first system thereby to reestablish the mirroring operation of the second system.
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