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Using Bidirectional Replication for Disaster Recovery › Bidirectional Replication Data Flow

Bidirectional Replication Data Flow

This example shows the bidirectional replication data flow from the PDC to the DRC.

bi_directional_replication_data_flow

The data flow process is:

  1. (PDC) CA Vtape services a scratch mount request with a Virtual Volume. For example, VOLSER P00001.
  2. (PDC) The volume is written to the CA Cloud Connector Vault Directory on Linux.
  3. (PDC) The volume data is stored on the mounted read/write directory on the Primary Appliance.
  4. (PDC/DRC)The Primary Appliance replicates the data to the read/only directory on the Secondary Appliance.
  5. (DRC) With the read/only directory on the appliance mounted to the CA Cloud Connector Vault Directory, the volume data is now available.
  6. (DRC) CA Vtape VTS can access the data from the CA Cloud Connector Vault Directory.
  7. (DRC) CA Vtape VTS can now mount the Virtual Volume (VOLSER P00001) for read requests.