This research provides a concise answer to how to organize a strong infrastructure of information technologies for high availability based on open source software, it's necessary for large organizations to provide high availability, the work will focus on explaining the procedures to provide services for users 24 hours the 365 days. Centralization is a major weakness today because is the only source of services and if it fails or is congested, the services is completely down. The new design of a high availability system, with the use of High Availability Proxy and the load balancing with Domain Name Service, both using the round robin algorithm, develop a new system easy to manage, flexible and scalable. The results of the implementation of the design were satisfactory because they were tested in a laboratory prototype distributing the total requests of the clients between the numbers of servers on the system.