Based On Research And Development Of High-availability System - The Systematic Study Of 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. Since the enterprises all over the world think much of the combination of competition and cooperation , there is more and more request for the system High Availability.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 manage efficiency and the convenience , facility system management. The High Availability system aims at continuable service , dynamic resources management and convenience system manage tools.New technologies of computer comes forth greatly nowdays , such as cluster, policy based system , network and so on. These technologies make the High availability possible and become more and more perfect. The author of this articale attend the designing and implementing the HA system Virtual Operation Environment , which based on the cluster , policy based , SNMP technologies 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 Virtual Operation Environment system ,analyses technology conditions to realize Virtual Operation Environment 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, which mainly developed by herself. At last, analyses the deficiency of the system and the work in the future .