About Quorum Configurations

The following list contains facts about quorum configurations:

• Quorum devices can contain user data.

• In an N+1 configuration where N quorum devices are each connected to one of the 1 through N Solaris hosts and the N+1 Solaris host, the cluster survives the death of either all 1 through N Solaris hosts or any of the N/2 Solaris hosts. This availability assumes that the quorum device is functioning correctly.

• In an N-host configuration where a single quorum device connects to all hosts, the cluster can survive the death of any of the N-1 hosts. This availability assumes that the quorum device is functioning correctly.

• In an N-host configuration where a single quorum device connects to all hosts, the cluster can survive the failure of the quorum device if all cluster hosts are available.

For examples of quorum configurations to avoid, see Bad Quorum Configurations. For examples of recommended quorum configurations, see Recommended Quorum Configurations.