Trusted Appliances Cluster (TAC)
Network clustering is where a group of computers are organized so they function together, providing highly available resources. Clustering is highly desirable for disaster recovery. Failure of one system will not affect business continuity and the performance of resources is maintained.
A Trusted Appliances cluster (TAC) is a tool, where appliances, such as, ESA or DSG replicate and maintain information. In a TAC, multiple appliances are connected using SSH. A trusted channel is created to transfer data between the appliances in the cluster. You can also run remote commands, backup data, synchronize files and configurations across multiple sites, or import/export configurations between appliances that are directly connected to each other.
In a TAC, all the systems in the cluster are in an active state. The request for security operations are handled across the active appliances in the cluster. Thus, in case of a failure of an appliance, the requests are balanced across other appliances in the cluster.