The following diagram depicts the Disaster Recovery and High Availability scenario for a Tier 2 service agreement level, as implemented by VLPARtm automated deployment. Under this scenario, three(3) nodes are created across two datacenters, two nodes in the primary production datacenter, one node in the disaster recovery datacenter.
In this scenario, the business functions are normally is normally running on a single node in the production datacenter. In the event of a hardware failure, the business functions are failed-over to a hot-standby node in the production datacenter. In the event of a datacenter failure, the business functions are failed-over to a hot-standby node in the disaster recovery datacenter.