Storage system and remote copy control method

Details Storage system and remote copy control method Storage system and remote copy control method

2008-02-11

2011-12-13

Ly, Cheyne (Department: 2168)

Data processing: database and file management or data structures

File or database maintenance

Database backup

C711S100000, C711S162000, C711S167000

Reexamination Certificate

active

08078581

ABSTRACT:
A plurality of second groups respectively including one or more second volumes are configured in correspondence with each of the first groups of a remote copy source in a remote copy destination, journals are acquired from the first storage apparatus periodically and in the order the journals were created for each of the configured second groups, and the acquired journals are reflected in the corresponding second volume in the corresponding second group. In addition, the latest time stamp of each of the second groups containing the journals retained in the second volume in an unreflected state is compared, the time difference of the latest and oldest time stamps is detected, and prescribed control processing is executed for acquiring the journals regarding the second group with the oldest time stamp in preference to the journals regarding other second groups when the time difference exceeds a preset threshold value.

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