Secure Replication

To protect against server or site outage, one Recovery Appliance can replicate backups to a different Recovery Appliance. Figure 1-6 shows the simplest form of replication, called one-way Recovery Appliance replication, in which an upstream Recovery Appliance (backup sender) transfers backups to a downstream Recovery Appliance (backup receiver).

Figure 1-6 One-Way Replication

Description of "Figure 1-6 One-Way Replication"

In Figure 1-6, a protected database sends an incremental backup to the Recovery Appliance, which then queues it for replicating to the downstream Recovery Appliance. When the upstream Recovery Appliance sends the incremental backup to the downstream Recovery Appliance, it creates a virtual full backup as normal. The downstream Recovery Appliance creates backup records in its recovery catalog. When the upstream Recovery Appliance requests the records, the downstream Recovery Appliance propagates the records back.

If the local Recovery Appliance cannot satisfy virtual full backup requests, then it automatically forwards them to the downstream Recovery Appliance, which sends virtual full backups to the protected database. DBAs use RMAN as normal, without needing to understand where or how the backup sets are stored.