High AvailabilityCluster Multi-Processing (HACMP) was developed by IBM to increase the reliability ofinterconnected systems. It is aimed at systems
in which time-critical applications are processed. The HACMP software ensures that critical resources and applications are available for processing. Corresponding HACMP systems can be designed redundantly in the server systems and the communication links. As can be seen from the name HACMP, it ensures high availability (HA) and cluster multi-processing (CMP).