Design And Implementation Of Disaster Recovery Syster Based On Virtual Tape Library

Virtual tape library, the technical concept than a decade ago, there have been, buthas not been commonly used. Until recent years, the cost of disk systems is gettinglower and lower, increasing reliability, the industry began to be more and more use ofthis technology. This technology is becoming the industry’s future developmentdirection.With the rapid development of computer technology, the system data generatedby the day-to-day activities of the Government increasing number and, therefore, theamount of data backup is also growing, existing automated tape library has beenunable to meet demand, therefore, the government disaster recovery systemperformance raise becomes imminent, the old mechanical tape library has been unableto do this task, government e-government system is close to the way of online storagefor data backup, physical tape library can only meet the design requirements of theoffline storage, so how to improve the e-government system became the core of thewhole system transformation in the crash data recovery capabilities and the level ofdata backup.Virtual tape library system in the course of the study of the subject structure is athree-tier structure, namely the host layer, the virtual tape library layer and layer ofautomated tape libraries. Increase in the traditional two-backup architecture basedvirtual tape library for disaster recovery of the three-tier system virtual tape librarylayer, virtual tape library layer is actually a near-line storage layer, the layercharacteristics similar to the online storage data backup speed, equipment prices closeto the off-line mass storage, this article through the in-depth study of existinge-government systems, into the in-depth analysis of the development status ofe-government disaster recovery system, its show inadequacies in the existingconditions conduct in-depth research and analysis as well as the core technology andother aspects of the existing system of mass data storage, and concluded thee-government system based on the desired effect, and the entire system of the the VTL disaster recovery system transformation goals to further validate the virtual tapelibrary technology capacity disaster system relative to the advantage of the physicaltape library.The government disaster recovery system for the study of the subject is addedto the traditional two-tier backup architecture virtual tape library, the host and backupdisaster the mutual backup system recovery point objective control within twominutes in real time, that is, within two minutes each data operation backup hostsystem business information services, to the maximum extent relief for the loss ofdata. Reached on the fundamental mechanisms require disaster recovery automatically,to ensure that the data recovery time indicators Therefore, even if there is a disaster oraccident situation, the host data can be achieved within two hours from the backupmachine recover within two hours, to ensure prepared the normal operation of themachine.Virtual tape library technology is a new technology in recent years developedsuitable for mass data backup and virtual tape library technology, especially in theapplication of the disaster recovery system, it has a backup speed, data recovery timecharacteristics, the main backup field overcome the shortcomings of the traditionalphysical tape library, and of great significance to the development of the field of databackup storage.