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在数据积累庞大的今天,大量数据的建置、转移、搜寻、管理、保存和恢复,从而形成一门最新的学问。据国际权威的IDC预测,至2000年,每年数据增长率高达96％。对于网络数据量在数十GB以上的用户来讲,单独的磁带机已经不是理想的备份系统,如采用人工方式备份,需频繁更换磁带,备份的准确性和完整性不能保证(如备份没有启动或放错磁带),且操作复杂,影响系统的总体效率和自动化水平;磁带只限于存放数据的功能,不易归档及规范化管理。因此,智能型的磁带库(Library)便应运而生。
Today, a huge amount of data is accumulated, and a large amount of data is built, transferred, searched, managed, saved and restored to form the latest knowledge. According to international authoritative IDC forecasts, by 2000, annual data growth rate as high as 96%. For users with tens of gigabytes of data on the network, a separate tape drive is not an ideal backup system. For example, when manual backup is performed, the tape needs to be replaced frequently. The accuracy and completeness of the backup can not be guaranteed (for example, the backup does not start Or misplaced tape), and the operation is complicated, affecting the overall efficiency and automation of the system; the tape is limited to the function of storing data, not easy to archive and standardized management. Therefore, the intelligent library (Library) came into being.