The Servers reports allow you to view server metrics during a specific time range. You can view metrics for a single server or compare the metric across multiple servers.
For example, you can choose one server and view a graph of the usage over time. You could select multiple servers and compare the usage of each server over the same time period.
You can also select a time range where an issue occurred and check different metrics on the server to find a cause.
You cannot view metrics on servers that are categorized as EM or UNITYSYS.