Use the following information to evaluate the best quorum configuration for your topology:
Do you have a device that is capable of being connected to all cluster nodes of the cluster?
If yes, configure that device as your one quorum device. You do not need to configure another quorum device because your configuration is the most optimal configuration.
Caution - If you ignore this requirement and add another quorum device, the additional quorum device reduces your cluster's availability.
If no, configure your dual-ported device or devices.
In general, if the addition of a quorum device makes the total cluster vote even, the total cluster availability decreases. If you do not have more than 50% of the total cluster vote to continue the operation, both subclusters will panic with a loss of operational quorum.
Quorum devices slightly slow reconfigurations after a node joins or a node dies. Therefore, do not add more quorum devices than are necessary.
For examples of recommended quorum configurations, see Recommended Quorum Configurations.