Using Bidirectional Replication for Disaster Recovery › Bidirectional Replication Example

Bidirectional Replication Example

This example describes how you can exploit a bidirectional replication. Use CA Cloud Storage for System z to write Virtual Volumes at one data center and read them at another.

Assume that you have two separate CA Cloud Storage for System z complexes running and configured at a production data center (PDC) and disaster recovery center (DRC):

• Configure the PDC to write Virtual Volumes to a locally attached disk storage appliance, the primary appliance.
• Configure the DRC to write Virtual Volumes to its own locally attached disk storage appliance, the secondary appliance.
• Configure the NFS exports on the primary appliance to replicate changes to the secondary appliance
• Configure the NFS exports on the secondary appliance to replicate changes to the primary appliance.

To accomplish bidirectional replication:

• Use a pair of EMC Data Domain appliances with two MTree-replicated directories.
• Use a pair of NetApp appliances with SnapMirror technology.
• Use four Riverbed SteelStore appliances which support unidirectional replication.