Dynatrace monitors allow to capture resource usage of hosts where Dynatrace agent is not installed, mostly Dynatrace agent is installed on the application server, health of database server can be tracked without installing agent on it with the help of monitors.
There is a feature to capture perfmon counters and display them in Dynatrace. The big limitation with this feature of Dynatrace is that the collector service of Dynatrace has to be running with an account that has access to the host whose health you want to monitor. There is no option to provide details of an account that already has access to the host.
Sitescope clearly beats Dynatrace in infrastructure monitoring. Sitescope allows to provide userid and password for the host you want to monitor, you are not dependent on any single account.
We wanted to replace Sitescope monitoring with Dynatrace monitors but were held back by the Dynatrace limitation that forces us to use only the account that is running Dynatrace collector service.
Dynatrace should seriously consider adding the feature to provide userid and password details similar to Sitescope when it comes to host monitoring, this would provide lot of flexibility and increase the usability value of Dynatrace.