The various system services that we previously discussed are listed in this node:

If you expand the individual service nodes, you will be able to see the placement of the services. Notice that all the services have been deployed to multiple nodes; however, the primary and secondary replicas of each service have been spread across multiple fault and upgrade domains for instance, in the preceding figure, you can see that the primary replica of the ClusterManagerService is deployed on the node named (_basic_2) while that of the FailoverManagerService is deployed on the node named (_basic_4).