What impact does DARA have on the server's base performance
The impact the DARA will have on a server depends upon several factors:
If there is no DA session running, the impact will be minimal (if even measurable).
When a DA session is running the impact will depend upon the nature of the distributed application running within the server (i.e. if it makes heavy use of COMM, ASP, VBScript, JScript or ISAPI filters the impact will be greater than if it does not), the speed of the communications channel between the console and the server host and the ability of the console to "consume" the information being sent from the host (i.e. the faster the machine running DA console the better).
The impact of DA/DARA on the target applications is something that we are continually seeking to minimize.