Server Manager can receive only online or offline status from servers that are running Windows Server 2003. If you need to manage an enterprise-level number of servers in your organization, we recommend evaluating products in the Microsoft System Center suite. Configure Event Data can be opened from the Tasks menu in the Events tile. To help increase the number of servers that you can manage by using Server Manager, we recommend limiting the event data that Server Manager gets from your managed servers, by using settings in the Configure Event Data dialog box. As the amount of data you want to display approaches that computer's resource capacity, you can experience slow responses from Server Manager, and delays in the completion of refreshes.

The number of servers that you can manage by using a single Server Manager console can vary depending on the amount of data that you request from managed servers, and hardware and network resources available to the computer running Server Manager.

In our tests, Server Manager in Windows Server 2012 and later releases of Windows Server can be used to manage up to 100 servers that are configured with a typical workload.

Remote desktop server manager