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