Some of the great tools that have come out of Microsoft include the ability to have your environment running in a highly available farm. These can be achieved with hardware and software and Microsoft provide these functions using Load Balancing or services and clustering. In chapter 2 of the ebook we look at why you would implement Moodle 2.0 in a highly available environment and then we go through the stages of implementing a Microsoft SQL Server cluster, two web front end servers that are load balanced for Internet Information Services (IIS) and then configuring the MoodleData folder to sit on a separate NAS.
If you are interested in this chapter it can be purchased with the rest of the ebook in PDF, epub and mobil version for the BFC Networks shop.
http://www.bfcnetworks.com/products-page/moodle/ebook-moodle-2-with-microsoft-technologies/