The following diagram depicts the Disaster Recovery scenario for a Tier 3 service agreement level, as implemented by VLPARtm automated deployment. Under this scenario, two(2) nodes are created across two datacenters, one node in each datacenter.
In this scenario, the business functions are running on running on a single node in the production datacenter. No high availability failover is provided, so in the event of a hardware failure on the production node, management must declare a disaster in order for a disaster recovery failover to be initiated. When a disaster is declared, the business functions are restarted on the disaster recovery node.