Disaster Recovery

In the realm of Disaster Recovery, multiple ESA instances are organized into a TAC in different sites, that is, Primary site and DR site to ensure Disaster Recovery (DR). The following details outline how this system is configured and operates:

Cluster Configuration

1. Primary-Secondary Replication: Changes made on the Primary ESA P1 to files, configurations, and other data are replicated over a trusted channel to Secondary ESAs, ESA S1, S2, and S3 in the primary site. The same changes are also replicated to ESA S4, S5, and S6 in the DR site.

   For more information about replicating primary ESA to secondary, refer to ESA Primary to Secondary Replication Job.

2. Failover Mechanism: If the Primary becomes unavailable, a Secondary can be promoted to Primary to maintain operational continuity.

   For more information about promoting Secondary ESA to Primary ESA, refer to Promoting Secondary ESA to Primary ESA.

3. Back up Primary ESA P1 data to a file: Alternatively, backed up file from primary ESA P1 can also provide disaster recovery.

   For more information, refer to Back up Primary ESA data to file.