Based On The Virtual Scsi Tape The Implementation And Application In The Backup System

When Human go into the information age, information resource, informationtechnology in the social economic development plays a very important role. Now eachindustry rely on data information than ever, data information to become the enterpriseand unit of important wealth. Data information and information security is thefoundation of enterprise development, TB and PB level data need to be backup andfiling. But the data backup to physical tape library the backup system and the databackup to disk the backup system can not meet the enterprise to backup performance,cost, data security needs.According to the structure and working principle of physical tape library, virtualtape library imitate in of each element: take library, fabrics, slots, I/E slots, mechanicalarm. Virtual tape library with the virtual library instantiation and virtual machineinstantiation, so virtual tape library has the various types of physical characteristics ofthe tape library and in the market of the mainstream and physical tape librarycompatible. Virtual tape library system has built by the SCSI-3version, the main useSPC/SMC/SSC content to take each element of the virtual library operation. The wholesystem has two interfaces to external interaction, respectively is Control Layer andSCSI Target. Control Layer let users easily interact is virtual tape library, and carry onthe related operation. Through the SCSI Target complete backup software and physicaltape library interactive data. Based on the SCSI virtual tape library not only meets theneeds of today’s backup system, and the ability to seamless access the current backupsystem and backup software and physical tape library compatible, and greatly reducethe backup costs, improve the return on capital. Virtual tape library strongly protect thevaluable data of individual, enterprise, government departments, as well as various largeinstitutions and t plays a crucial role in the information system development.