Virtualized clusters and high-performance computing Definitions

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  • C

    Cluster Labs Pacemaker

    Pacemaker is an open source high-availability cluster software developed from a collaboration between Red Hat and Novell.

  • I

    I/O fencing (input/output fencing)

    I/O (input/output) fencing is the isolation of a malfunctioning node from a cluster's shared storage to protect the integrity of data.

  • S

    STONITH (Shoot The Other Node In The Head)

    STONITH (Shoot The Other Node In The Head) is a Linux service for maintaining the integrity of nodes in a high-availability (HA) cluster. 

  • stretched cluster

    A stretched cluster is a deployment model in which two or more virtualization host servers are part of the same logical cluster but located in separate geographical locations.

  • V

    virtual machine (VM)

    A virtual machine (VM) is a software computer that, like a physical computer, runs an operating system and applications.

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