Trailhead can be configured to provide redundancy, ensuring system coverage even if one component experiences difficulties. Consider the example below.
The Trailhead server maintains two connections:
one connection to the Trailhead medium on Media Blender 1
one connection to the Trailhead medium on Media Blender 2
In Trailhead.server.properties, two connections are defined for this Trailhead server.
Each Trailhead medium maintains one connection to the Trailhead server. Therefore, one connection is defined in the Trailhead.properties file on each Media Blender server.