HCL Workload Automation, Version 9.4

Physical components of an HACMP cluster

HACMP™ provides a highly-available environment by identifying a set of resources that are essential to uninterrupted processing, and by defining a protocol that nodes use to collaborate to ensure that these resources are available. HACMP extends the clustering model by defining relationships among cooperating processors where one processor provides the service offered by a peer, when the peer is unable to do so.

An HACMP Cluster is made up of the following physical components:

HACMP allows you to combine physical components into a wide range of cluster configurations, providing you with flexibility in building a cluster that meets your processing requirements. Figure 1 shows an example of an HACMP cluster. Other HACMP clusters can look very different, depending on the number of processors, the choice of networking and disk technologies, and so on.

Figure 1. Shared disk with mirror
shared disk with mirrors