The Physical View explained.
The Physical View displays
available physical resources and their location within the enterprise.
Resources in this view are organized by subnet and host. If a resource
is not associated with a subnet or host, it is displayed under Unconnected
Resources.
Note: Physical resources represent testable items in
your system, but they are only accessible when bound to a logical
resource by using the environment that is in use by a test.
Note: Since a logical resource can be bound to only
one physical resource at a time, you normally create multiple versions
of a physical resource for use in different environments.