The Web Farm Framework includes some built-in management infrastructure that allows you to check on the health of a server, and track its status.  You can also use a product like Microsoft System Center (or any custom monitoring software or scripts you have) to monitor the server status within the farm.  If you are using ARR for load-balancing, it also supports a bunch of monitoring and load-balancing settings that allow you to dynamically shift loads across the farm based on server performance and available utilization.

The Web Farm Framework also supports a “Server Farm Operations” task link within the IIS Admin Tool (on the right-hand side of the tool) that you can use to easily run commands across the server farm.  For example, we could flash a command to all the servers in the web farm to ensure that a “MyCustomWindowsService” is started and running using the screen below:

You can also fully automate tasks using PowerShell scripts.