Method and apparatus for re-synchronizing paired volumes via...

Details Method and apparatus for re-synchronizing paired volumes via... Method and apparatus for re-synchronizing paired volumes via...

2005-12-20

2005-12-20

Elmore, Stephen C. (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S111000, C711S112000, C711S161000, C711S162000, C714S005110, C714S006130, C707S793000

Reexamination Certificate

active

06978347

ABSTRACT:
A storage system data duplication method for copying data of a plurality of logical volumes possessed by a first storage system to a second storage system includes the steps of: (a) copying the data of the plurality of logical volumes to the second storage system; (b) interrupting copying of the data of the plurality of logical volumes to the second storage system; (c) starting copying of data of one or more of the plurality of logical volumes to the second storage system; and starting copying of data of ones of the plurality of logical volumes other than the one or more logical volumes to the second storage system as delayed from the step (c), shortening a time taken until completion of data duplication on recreation of a group of paired logical volumes in a volume group after remote copy is temporarily stopped.

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