From High Availability Systems to Fault Tolerant Production Infrastructures

Disaster Recovery Infrastructures, which become an important part of all major IT infrastructures, are usually implemented in a stand-by mode, anticipating a disaster to justify their existence. This paper suggests the transformation of existing High Availability Standby Systems to fully Fault Tolerant Production Infrastructures in order to increase productivity, effectiveness and availability. The most important differences of the two approaches are presented and a transformation strategy that brings together technical and managerial points of view is suggested.