Managing HP Serviceguard for Linux, Seventh Edition, July 2007

Understanding Serviceguard Software Components
How the Cluster Manager Works
Chapter 3 45
If the first cluster created, in a group of clusters, needs a quorum device,
that cluster must use a stand alone quorum server or lock LUN.
Figure 3-4 illustrates quorum server use across four clusters.
Figure 3-4 Quorum Server to Cluster Distribution
HP recommends that two clusters running quorum server packages do
not provide quorum services for each other. For example if qspkgA
running on cluster1 is providing quorum services for cluster2, qspkgB
running on cluster2 should not provide quorum services for cluster1.
This recommendation is a guideline, not an absolute rule.