In the case of "When making the GDS configuration of the copy destination the same as the configuration of the copy source" in "K.1.3 Copying Method for Data Disk (GDS)," replicate data according to step 2 in" When not using the mirroring among servers" or step 1 in "When using the mirroring among servers."
In the case of "When making the GDS configuration of the copy destination different from the configuration of the copy source" in "K.1.3 Copying Method for Data Disk (GDS)," back up the data on the source volume according to step 1.