Virtual Tape Library Disaster In The Research And Application In The System

With the quickening of the process of informatization, people on the datainformation depends on more and more high, but data loss caused by the disaster riskhas been increasingly serious. Therefore, disaster tolerance system establishment hasbecome an integral part of the enterprise and unit. But, with the increase of demand dataprotection, tolerant system construction cost has become unattainable, this makes a lotof enterprises and institutions have to continue to endure the risks of loss of data.How to meet user needs tolerant of, also can effectively reduce the cost ofconstruction tolerant system, upgrade gave place now disaster recover systemenvironment, is a very has the research value and commercial value of the subject. Andin numerous tolerant scheme, based on tape library of cold backup tapes tolerant scheme,which should be a place of the most vulnerable disaster plan and realize the lowest costof tolerant scheme. But, because the tape inventory in mechanical failures, maintenancedifficulties, management complex, reading and writing, do not support slowperformance remote replication shortcomings, makes this scheme of invulnerabilityability is very low, far from meeting the needs of people data protection. Therefore, howto avoid the tape library their own weaknesses, improve the tolerant scheme tolerantlevel is a problem to be solved.Virtual tape library to disk for storage medium, through the software to simulatethe physical tape library work mode and component elements, so as to achieve the samephysical tape library function. At the same time, because by using high-speed diskmedium instead of tape, making virtual tape library has higher literacy performance, andsuccessful overcome the physical tape library of other weaknesses. In addition, thevirtual tape library can also integrated data replication, repeating data deletion ofadvanced features, easily realize data tolerant function. Therefore, in the tape backupplan in cold tolerant into virtual tape library, can not only can improve the tolerantsystem of invulnerability level, still can make full use of previous investmentenvironment and save cost.Based on the construction of virtual tape library tolerant system has the very high research significance. This article through the key technology research, mainstreamtolerant tolerant scheme comparison and storage medium summarizes limitation, andaccording to the specific tolerant project construction, through the project requirementanalysis, project design, implementation, testing acceptance links such as furtherexpounds the virtual tape library products in tolerant system in the specific application.During the design of virtual tape library software architecture, data structure, realize thebasic function of the virtual tape library. Through the project acceptance test and,further proof, based on virtual tape library tolerant scheme has a high application andcommercial value...