Cross-Cluster Quorum Server Configuration

Cross Cluster Quorum Server Configurations
3 10/7/2004
node A node B
QS
node C node D
QS
switch switch
power 1
power 2
cluster1
cluster2
Figure 1
To avoid this issue where all nodes fail, every cluster node must be connected to separate power
circuits as shown in Figure 2, if each node has only one power input.
node A node B
QS
node C node D
QS
switch switch
power 1
power 2
cluster1
cluster2
power 3 power 4
Figure 2
If each node in the cluster has multiple power inputs, each connected to a different power circuit, and
can continue running after the failure of any single power circuit, then it is acceptable to have more
than one node connected to the same power circuit, since the failure of any single power circuit will
not cause any node to fail.