Dynamic change management in an extended remote copy operation
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United States of America Patent
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Jul 11, 2000
Grant Date -
N/A
app pub date -
Dec 18, 1997
filing date -
Dec 18, 1997
priority date (Note) -
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Abstract
A method, apparatus, and article of manufacture for dynamic change management in an extended remote copy system. A primary data mover monitors changes made to a primary data volume resulting from write I/O operations, wherein the changes are reflected in a data structure maintained by the primary data mover. The primary data mover performs a multi-level analysis on the data structure to discard a portion of the changes therein, so that the changes that have been applied to a secondary data volume are discarded from the data structure and the changes that have not been applied to the secondary data volume are maintained in the data structure.
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