Patent ID: 6978347
Filing Date: 2005-12-20
Classification: G06F,Y10S

Abstract:
1. A storage system duplication method for copying data from a plurality of primary volumes defined in a first storage system to a secondary storage system, the method comprising: transmitting the data from said plurality of primary volumes to said secondary storage system, said plurality of primary volumes including first and second primary volumes, said first primary volume being assigned to first paired volumes, said second primary volume being assigned to second paired volumes; temporarily stopping the transmission of the data of said plurality of primary volumes to said secondary storage system if a data transmission problem is detected for said first paired volumes, and suspending said first and second paired volumes; creating replications of the data related to said first and second paired volumes within a target volume that is provided in said secondary storage system, and suspending said target volume; start transmitting the data from said second primary volume to said secondary storage system; and thereafter, transmitting the data from said first primary volume to said secondary storage system.