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# The Navigation Tree

The navigation tree organizes managed nodes into a hierarchy, and comprises the following:

- System: Displays the entire set of nodes managed by ArcMC.
- Location: Individual locations are displayed under System, listed in the order in which they were added. Locations are logical groupings you can use to organize a list of hosts. For more information, see Locations.
- Host: Each location branch shows all hosts assigned to that location, listed by hostname, in the order in which they were added. For more information, see Hosts.
- Node Types: Each host branch shows all managed nodes associated with that host. A node can be any of the following types:
- Connector Appliance or Software Connector Appliance: Each Connector Appliance (hardware or software) is shown as a separate node.
- Logger Appliance or Software Logger: Each Logger (hardware or software) is shown as a separate node.
- ArcSight Management Center: Each ArcSight Management Center (hardware or software) is shown as a separate node.
- Container: If the host includes any containers, each is shown as a node.
- Connector: If a container node contains a connector, the connector is shown under the container node in which it is contained.

- Collector: If a container node contains a Collector, the Collector is shown under the container node in which it is contained.

- Transformation Hub: A managed Transformation Hub is shown as a node.

Since items in the tree are organized hierarchically, each item in the tree includes all branches displayed below it. For example, a Location branch includes all hosts assigned to that location. Click the wedge icon to toggle the view of any branch and any items included in the branch.