2.2 Terminology

Each application server vendor uses specific terminology, which is defined here to avoid confusion.

    2.2.1 JBoss

    server: Represents an instance of a Java™ virtual machine (JVM™).

    cluster: Represents a logical grouping of multiple application servers for administration, application deployment, load balancing, and failover purposes.

    2.2.2 WebLogic

    server: Represents an instance of a Java™ virtual machine (JVM™).

    machine: Represents a physical system running one or more instances of WebLogic Server.

    cluster: Represents a logical grouping of multiple application servers within a domain for administration, application deployment, load balancing, and failover purposes.

    2.2.3 WebSphere

    server: Represents an instance of a Java™ virtual machine (JVM™).

    node: Represents a physical system running one or more instances of WebSphere Application Server.

    cell: Represents a logical grouping of multiple nodes for administrative purposes.

    federation: The process of joining a stand-alone WebSphere node to a WebSphere cell.

    cluster: Represents a logical grouping of multiple application servers within a cell for administration, application deployment, load balancing, and failover purposes.

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