Research On Disater And Backup System Of Intranet Network

Disaster recovery system is an indispensable part of information system. More than forty percent corporations or companies are close d down because important data of these corporations or companies has lost. However, because of the lack of domestic disaster tolerance products and the expensiveness of international analogous products, many government departments, have not founded their disaster recovery systems. Once disaster happens, the most important information will lost. Domestic research on backup system and disaster recovery products is underway at present, so the study on disaster recovery and the relative products of backup system are significant and have wide foreground.Backup modes are divided into complete backup modes and incremental backup modes by backup strategy, logic layer modes and physical layer modes by backup layer, synchronous modes and asynchronous modes by backup transportation process, and timely modes and instant modes by backup interval.The synchronous network system that this text put forward in fixed time full-automatic backup system, is according to the backup technique of the applied layer of the Windows platform, don't depend on any hardware equipments or the third software. The agent gets the attribute such as the create time of the document in the fixed time. While the last updated files will be automatically transmitted to master by searching the time attribute of files at substitution, the information on transmission, error and confirmation is imported into the log for regulation, with regulation system for files added.This paper consists of six chapters. The first chapter is the preface on background of the project; the second is the basic concept and system constitution of disaster recovery; the third is the summaries on key technology of disaster recovery and backup; the forth is on the status quo of education network and present disaster recovery solution analysis made by main IT corporations; the fifth is the design and implement of the project, a disaster recovery system on application level for the demand of education network; the last is the conclusion and about prospect.