Windows Performance Counters
You need to be able to tell how NT/Windows 2000 is reacting to the presence of SQL Server running within it: how SQL Server is using memory, the processors, and other important system resources. A large number of objects and counters relate to Windows and the services it is running. The next few sections will look at which objects and counters provide useful information in investigating certain areas of the system and focus on the ones that you need for monitoring SQL Server.
Some of the network counters are available only if you add the Network Monitor Agent. You can add this software component through the Network icon (Add Network Components) in the Control Panel. This is highly recommended because it will ...