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Using Xervmon for planning and provisioning redundancy across multiple approachability zonesThe cost of downtimeDowntime be enterprises money, in fact a great deal of money. The actual cost depends on the industry, but on average the revenue losses amount to between $84,000 and $108,000 for either hour of unplanned downtime. That isnt the only loss on to that you need to add the intangible costs of the impact of downtime on reputation and loyalty.Managing downtimeThere is a big difference between scheduled and unscheduled downtime. Scheduled downtime is necessary in vow to perform maintenance such as software patches, governing body contour line changes and database and ironware maintenance. Unscheduled downtime occurs typically as the result of hardware or software failure or an event such as a power cut or environmental catastrophe. High availability scheming a system for high availability is problematic. Increasing system complexity increases the number of possible fa ilure points. Simply installing internal hardware redundancy isnt an answer as it means that the whole system must be taken down for maintenance. It is necessary so object the system so that it can be maintained without affecting go availability. Such a management tool needs to satisfy ternion criteria high availability, fault tolerance and scalability.High availability implies that the uptime of an coating is 99.9999%, which is lots termed five nines. It equates to a maximum downtime of 5.26 minutes a year which includes twain planned and unplanned outages or downtime. Of course the ultimate goal is an application that has no downtime at all and is always available.Xervmon Solution Users can now unleash the power of visualized deployments with ... ... have been restored. ELB and Auto Scaling combining ideally ELB gives a single DNS name for addressing and auto scaling ensures thither is always the right number of healthy Amazon EC2 lawsuits to accept requests. mar Tol eranceBuilding fault-tolerant applications on Amazon EC2 requires that the best practices are followed, for instanceCommission replacement instances rapidlyAmazon EBS should be utilise for persistent storage Multiple Availability Zones along with elastic IP addresses. Multi AZ architectureBy distributing applications geographically one can grasp greater fault tolerance. As the Amazon EC2 commitment is 99.95% availability for every EC2 Region, it is essential to deploy applications across multiple AZs.Redundant instances are fixed in distinct AZs and ELB will automatically balance traffic across multiple instances and multiple AZs.