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Chapter 2 Data Replication
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The replication operations include Replicate that replicates data from MV to RV, Separate that
separates between MV and RV, and Restore that replicates data from RV to MV.
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This operation copies data from MV to RV.
It is performed to replicate the latest data to the replication volume used in a test environment or search
tasks. When Replicate is executed, the data in MV is copied to RV. In addition, any update made to
MV after Replicate is reflected to RV.
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This operation separates MV and RV.
It is performed to suspend data replication between MV and RV to use RV in a test environment or
search tasks.
When Separate is started, all the difference between the MV and RV contents at the point of starting
Separate is reflected into the RV, and then data replication is suspended and the RV is separated. The
updates made to MV after starting Separate are not reflected to RV and stored in the disk array as
update differences.
When executing Separate, you can determine when to make the RV available by choosing either of the
following:
• Separate for making RV available after completion of separation: Separate(completion)
Reflects all the difference between the MV and RV contents into the RV, and makes the RV available
after completion of separation.
Even though Separate is executed immediately after Replicate starts, RV cannot be used while the
difference between MV and RV is being reflected to RV. RV becomes available upon completion
of separation.
• Separate for immediately making RV available: Separate(immediate)
While reflecting the difference between the MV and RV contents into the RV, the Separate function
makes the RV available even during separation. You can instantly create RV and make it available
by executing Separate(immediate).
This function is available only for performing data replication in the same disk array. The product
“DynamicDataReplication Ver2“ is necessary for using the function.