High Availability In The Virtual Operating Environment

With the communication and computer technology developing rapidly, the enterprise more and more depend on the computer system and the network technology. The classic system structure based on C/S has been achieved widely use, but it lacks high availability and management. If use this system, the user will pay huge cost of application's upgrade and management. With the network's development, multi distributed cluster computing is prevailing. It not only has more the ratio of function and price, but also has good extension. In the past, the High Availability needs the system provide the continuable service and dispose the system hardware fault in time. As the world economy developing and the competition picking up, High Availability has the new meaning. It means not only the continuable service, but also the high resource manages efficiency and the convenience, facility system management. The High Availability system aims at continuable service; dynamic resources management and convenience system manage tools.The author of this article attend the designing and implementing the HA system Virtual Operation Environmen, which based on the cluster, policy based, providing graphic tools to achieve the HA. In the process of development, the author deeply studied the system, and then finished the paper.Firstly, the paper explains High Availablility, then described the architecture and the fundation modules of system, analyses technology conditions to realize Visual Operating System system, and mainly studies design and realization of the system. In the realization of the system, the author describled the database module, policy module and the composition change module in detail. At last, analyses the deficiency of the system and the work in the future.