Method and apparatus for making differential independent...

Details Method and apparatus for making differential independent... Method and apparatus for making differential independent...

2006-05-02

2006-05-02

Ali, Mohammad (Department: 2167)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000

Reexamination Certificate

active

07039659

ABSTRACT:
Data is copied from a source storage device to a destination storage device in a differential mode. An extents track defines all tracks to be transferred during a first copying operation. Complementary track tables for source and destination storage devices establishing the totality of changes in data since a previous copying program to limit subsequent copying to data on changed tracks only.

REFERENCES:
patent: 6363385 (2002-03-01), Kedem et al.
patent: 6732245 (2004-05-01), Kaiya et al.
patent: 2003/0182330 (2003-09-01), Manley et al.

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