Virtualization for Green IT

One of the most dangerous affect of a datacenter is energy usage and unfortunately exhaust of hot air. When design our systems we do not even think how to save energy. We are just focusing to finish project. Nowadays, we are discussing energy savings for two reasons: Global economic crisis and saving the world.
As we just add a server for any application we are just talking about adding maybe hundreds of servers. When you think of the functioning times of these servers you will realize that some of your servers are working quite hard as some of them are resting. What we really get is, we use our cpus less than %20 and this causes purchasing lots of full computers. Instead we can use one hardware and share this hardware among the others. At this point, we have the chance of working on one hardware multiple servers and use same hardware utilized 24 hours.
Virtualization takes active role when we try use same hardware for multiple servers. Main function of virtualization is downsizing the energy costs, downtimes and time to deploy new servers. We will discuss virtualization technologies in detail.