To have high availability for document service in Genetec Mission Controlâ„¢, the MongoDB database service should be accessible outside the local system.
To enable automatic failover, MongoDB is configured to run as a replica set where
multiple MongoDB instances on separate servers are running parallel. Configure a replica set
with three servers and keep the read and write capabilities when running two
servers. Also, test a single-server service that only allows read-only functionality until a
second server is restored.