The following diagram depicts the Disaster Recovery scenario for a Tier 3 service agreement level, as implemented by VLPAR® 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.