Dynamic change management in an extended remote copy operation

Details Dynamic change management in an extended remote copy operation Dynamic change management in an extended remote copy operation

1997-12-18

2000-07-11

Amsbury, Wayne

Data processing: database and file management or data structures

Database design

Data structure types

364229, 711162, G06F 1730

Patent

active

060886978

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.

REFERENCES:
patent: 4837680 (1989-06-01), Crockett et al.
patent: 5504861 (1996-04-01), Crockett et al.
patent: 5574950 (1996-11-01), Hathorn et al.
patent: 5592618 (1997-01-01), Micka et al.
patent: 5778393 (1998-07-01), Blea et al.

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