Extended Monitoring Guide

In addition to collectors, Distributed Collector allows you to set up new hubs. A hub represents an instance of the zenhub daemon, which is the daemon through which all collector daemons communicate with the object database and event database. All collectors must belong to exactly one hub; however, a hub may have many collectors associated with it. All hubs (and indirectly all collectors) refer to the same object and event databases. Typically, only very large systems with more than five collectors or more than 1,500 devices will benefit from multiple hubs.