Meridian Instance Management An instance is a single implementation of OpenNMS Meridian. You need a separate Meridian instance for each licence type: Appliances or Time Series DB. An "Appliances" Meridian instance indicates how a Minion Appliance connects to your Meridian instance by specifying connectivity information (for example, message broker details) and configuration information (traps, syslog, telemtryd). A "Time Series DB" instance provides the key required to activate the Time Series DB feature. See Specify a Meridian Appliances Instance and Profiles for information on how to create a Meridian instance. OpenNMS Meridian Appliance Service