We have talked some on who needs cloud and why you need the cloud. Now I wanna talk about what is involved in building a cloud. Cloud computing consists of the layers you see in the image to the left. I wanna focus on the foundation of infrastructure and how you build a proper one. What makes for a solid cloud foundation. We will talk later about processors and memory and how many servers you need to start a cloud off. For now I wanna start with what seems to be the weakest link, storage.