Industry terminology

Vendors and industry analysts use a variety of differing terms to describe high availability concepts. IBM® uses the terms server farms and server clusters to distinguish between these two different technologies.

Table 1. Industry terms mapped to the terminology used in this document
Vendor or analyst	Term for server farm	Term for server cluster
Gartner Group	Web server cluster	Application server cluster, database cluster
IBM	WebSphere® server group of clones; also cluster	Cluster
Symantec	Parallel group	Failover group