Immaculate server uptime is a measure of the high availability of your website. While choosing a server hosting service, uptime is one of the key features that users look at because it defines the efficiency of the system, in a way. Availability is measured by subtracting down time from total time and dividing the product by total time. It is a realistic way of measuring availability. High availability means removal of single points of failure. High availability can be achieved consistently if the system is able to detect failure as they just as they occur. A series of advanced systems are used to ensure high server uptime that can lead to optimum availability of website and application.