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Cluster Configuration - Overview

You can configure and manage Windows and Unix Cluster Group clients from the CommCell Console. After a subclient is created for the cluster group client, you can perform backup and recovery operations and take advantage of the reliability and fault-tolerance provided by clusters. If an active node fails, the software seamlessly resumes using the next available active node during backup and recovery operations.

Terminology

  • Nodes

    The individual physical servers that are a part of the cluster group. The physical server is called a "physical computer", "physical node", or a "client computer" depending on the context in which it is being discussed.

  • Active and Passive

    Describes the role of the physical server. If a physical server is actively performing an operation within the cluster environment at a particular time, it is the active node.

  • Cluster Service

    Manages the hardware and software components within a cluster. Examples of components: Cluster Group, Cluster Server, Cluster Resource Group, and Virtual Node.

  • Cluster Server

    A virtual server that operates as a single, logical unit within the system. The Cluster Server has an Internet Protocol (IP) address and a network name.

  • Shared Disk

    The resource connected to each physical computer that hosts the common data for CommCell operations, such as data protection and recovery. Information that is only relevant to an individual physical server should be on the local disk of that physical server, not on the shared disk.