Parallel data change tracking for maintaining mirrored data...

Details Parallel data change tracking for maintaining mirrored data... Parallel data change tracking for maintaining mirrored data...

2006-09-05

2006-09-05

Le, Dieu-Minh (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S005110

Reexamination Certificate

active

07103796

ABSTRACT:
A method, system, computer system and computer program product to maintain consistency between mirrored copies of data. A first data change map identifies regions that are about to be updated. If a system failure occurs during the update, the first data change map identifies regions that were being changed so that only those regions can be synchronized to restore consistency between the mirrored copies of data. A second data change map tracks changes made to data after a snapshot of the mirrored data is taken. This second data change map enables the mirrored copies of data to be synchronized without copying all data from one mirrored copy to another. The first and second data change maps are updated in parallel to reduce processing time and overhead. This parallel processing enables fast restoration and synchronization of mirrored copies of data, while having minimal effect on performance of applications using the data.

REFERENCES:
patent: 5649152 (1997-07-01), Ohran et al.
patent: 5835953 (1998-11-01), Ohran
patent: 5875479 (1999-02-01), Blount et al.
patent: 5915098 (1999-06-01), Palmer et al.
patent: 6073222 (2000-06-01), Ohran
patent: 6085298 (2000-07-01), Ohran
patent: RE37601 (2002-03-01), Eastridge et al.
patent: 6728898 (2004-04-01), Tremblay et al.
patent: 6732245 (2004-05-01), Kaiya et al.
patent: 6779093 (2004-08-01), Gupta
patent: 2003/0014433 (2003-01-01), Teloh et al.
patent: 2003/0061366 (2003-03-01), Musante et al.
patent: 2003/0126388 (2003-07-01), Yamagami
patent: 2003/0158869 (2003-08-01), Micka

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