High Availability, Disaster Recovery, and Fault Tolerance
Production environments require increased uptime and business continuity, which depend on High Availability, Disaster Recovery, and Fault Tolerance capabilities explained in the following diagram.
Note: Unlike high availability and fault tolerance, disaster recovery
deals with catastrophic consequences that render entire IT infrastructures
unavailable rather than single component failures. Since disaster recovery
involves data and technology, its main objective is to recover data as well as
get infrastructure components up and running within the shortest time frame
after an unpredicted event.
Deployment Recommendations
IBM recommends the following cluster deployment options for the production and test environments:
