Overview of HA solution

Disaster recovery provides maximum service availability in the event of isolated failures (for example, software or OS failures) on one of the two HA nodes. Consequently, any data center impacting outages prohibit this configuration from continuing to service user requests. For more information, see Disaster-Recovery.

The following figure shows overview of BDA HA:

The shared storage, which is mounted on the active node, stores all dynamic- and application-related data. Specific configuration files must be maintained independently. For more information, see Nodes-installation.

The BDA management interface is accessed using a virtual IP address. Existing sessions to the BDA Manager are lost during failover; therefore, you must refresh or re-authenticate. The estimated duration of complete failover or switchover should not exceed five minutes. Exceptions to the typical failover time are likely because of the variability in the solution stack components, such as clusterware, OS, and system specifications.

This section contains the following topics: