Capacity Planning

http://www.microsoft.com/ntserver/ntserverenterprise/exec/feature/wlbs/faq.asp: This contains Network Load Balancing Frequently Asked Questions.
http://www.microsoft.com/backstage/: Microsoft® Backstage has various articles and information about the microsoft.com Web site.
http://www.capacityplanning.com/whitepapers.html: This is a commercial capacity planning site.
http://www.realtime-info.be/encyc/techno/terms/7/66.htm: This site describes the Open Systems Interconnect seven-layer model.
http://www.softwareqatest.com/qatweb1.html: This page provides a wide variety of load and performance tools for download.
http://msdn.microsoft.com/workshop/server/feature/server042798.asp: This site describes InetMon, a capacity planning tool that you can use when testing your site. It supports a wide variety of protocols, and can monitor both services and hardware.