Server logs are a double-edged sword. You can use them to monitor your system effectively, but they can cause performance penalties if they pile up. In this chapter, you have learned the different levels of Server logs and how and which level you should configure your Server setup to. You also learned how to analyze the logs and extract useful information to optimize your services and detect a malfunction in one of your Server components, if any. In the coming appendix, you will learn some rules of thumb for selecting the right hardware for your ArcGIS for Server setup.