HP Integrity rx6600 Cluster Installation and Configuration Guide - Windows Ser - Page 14

Majority Node Set, Node and File Share Majority, Disk Only example

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Figure 1-1 Disk Only example • Majority Node Set - This type of quorum is optimal for clusters having an odd number of nodes. In this configuration, only the nodes have votes. The shared storage does not have a vote. A majority of votes are needed to operate the cluster. Figure 1-2 Node Majority example • Node and File Share Majority - This type of quorum is optimal for clusters having an even number of nodes when a shared witness disk is not an option. Other characteristics include the following: - each node and the file share "witness" gets a vote - it does not require a shared disk to reach a quorum - the file share has no special requirements - the file share should be located at a third site, making this type of quorum the best solution for geographically dispersed clusters 14 Introduction

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Figure 1-1 Disk Only example
•
Majority Node Set
– This type of quorum is optimal for clusters having an odd number of
nodes. In this configuration, only the nodes have votes. The shared storage does not have
a vote. A majority of votes are needed to operate the cluster.
Figure 1-2 Node Majority example
•
Node and File Share Majority
– This type of quorum is optimal for clusters having an even
number of nodes when a shared witness disk is not an option. Other characteristics include
the following:
—
each node and the file share “witness” gets a vote
—
it does not require a shared disk to reach a quorum
—
the file share has no special requirements
—
the file share should be located at a third site, making this type of quorum the best
solution for geographically dispersed clusters
14
Introduction