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Oracle RAC and PowerFlex Asynchronous Replication
Executive Summary Introduction Product overview PowerFlex asynchronous replication architecture Basic concepts Solution architecture Oracle RAC configuration Failure scenarios
Failure scenarios
Workload description
Scenario 1: Planned test failover
Scenario 2: Complete failover and reverse replication
Scenario 3: Remote snapshot
Scenario 4: Backup in target
Conclusion Appendix References

Scenario 3: Remote snapshot

Scenario 3: Remote snapshot

  • PowerFlex remote snapshot feature enables users to take snapshots of an RCG, which would create a new set of volumes in target system. The new volumes can then be mounted to the RHEL VMs and database can be bought up on the target system. Highlights of the required steps are provided below:

    1. Start the workload.
    2. Log in to the PowerFlex presentation server UI of target system. Create a snapshot of both RCGs: oracle_DATAREDO and oracle_FRA.

    1. The new snapshot volumes are displayed under volumes and acts as separate volumes which are not part of replication. The original replicated volumes are still present and participating in replication.

    Note: No impact of performance during snapshot creation process for replication.

    1. Map the snapshot volumes to all SDCs that are part of the compute cluster; Add and mount the volumes across all VMs.
    2. Configure ASM disk groups with new volumes and start Oracle RAC cluster.
    3. Start the Oracle database.

    Result: A separate instance of an Oracle RAC database is running on the target system