Method and system for storing duplicate data

Details Method and system for storing duplicate data Method and system for storing duplicate data

2007-11-06

2007-11-06

Salad, Abdullahi (Department: 2157)

Electrical computers and digital processing systems: multicomput

Remote data accessing

C709S201000, C709S213000, C709S214000, C709S215000, C709S216000, C711S162000

Reexamination Certificate

active

09866226

ABSTRACT:
During recovery of a master system, a mismatch between data in the master system and that in a backup system is obviated quickly to shorten time consumed before resumption of operation of the master system. The backup system controls, as second difference information, update data generated over a substitute operation period between occurrence of a disabled state of the master system and recovery thereof and when the master system is enabled to operate, a range of addition of first difference information inside the master system and the second difference information or only a range of the second difference information is copied to the master system to eliminate the data mismatch.

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