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    • 26. 发明授权
    • Method for recording data freshness degrees by a tape drive
    • 通过磁带驱动器记录数据新鲜度的方法
    • US07443624B2
    • 2008-10-28
    • US10508872
    • 2003-02-13
    • Hiroshi Itagaki
    • Hiroshi Itagaki
    • G11B5/09
    • G11B27/3027G11B20/1201G11B20/18G11B27/36G11B2220/90
    • A method for recording data freshness degrees by a tape drive is disclosed. During the recording of a set of data and a data freshness degree associated with the set of data a tape recording medium, a determination is made as to whether or not a fault occurs during the recording. In response to a determination that a fault occurs during the recording, a data freshness degree of data within a faulty portion on the tape recording medium is obtained. The data freshness degree of the set of data is then immediately recorded before the faulty portion on the tape recording medium. The data freshness degree is higher than the data freshness degree of data within the faulty portion.
    • 公开了一种通过磁带机记录数据新鲜程度的方法。 在记录一组数据和与该数据集合相关联的数据新鲜程度的磁带记录介质的过程中,确定在记录期间是否发生故障。 响应于在记录期间发生故障的确定,获得带记录介质上的故障部分内的数据的数据新鲜程度。 该数据组的数据新鲜程度然后立即记录在磁带记录介质上的故障部分之前。 数据新鲜度高于故障部分内数据的新鲜程度。
    • 27. 发明授权
    • Migrating data from one recording medium to another
    • 将数据从一个记录介质迁移到另一个记录介质
    • US08400897B2
    • 2013-03-19
    • US13325644
    • 2011-12-14
    • Hiroshi ItagakiYutaka Oishi
    • Hiroshi ItagakiYutaka Oishi
    • G11B7/00
    • G06F3/0607G06F3/0647G06F3/0686
    • Provided is a storage mechanism that readably migrates a content of data from one recording medium to another over generations in a readable manner and provides the contents of the records from a current recording medium. A read/write controller comprises a mechanism for preparing an archive recording medium of a first generation having a plurality of records recorded therein and a mechanism for migrating the records from the recording medium of the first generation to a recording medium of the next generation (the third generation subsequent to the first generation) and further to recording media of following generations one by one. The migration mechanism generates migration information including a mapping table between record numbers of the first generation and a current generation and holds the migration information as data in the recording medium of the current generation.
    • 提供了一种存储机构,其以可读取的方式将数据的内容从一个记录介质可读地迁移到另一个记录介质,并且从当前记录介质提供记录的内容。 读/写控制器包括用于准备具有记录在其中的多个记录的第一代记录介质的机构和用于将记录从第一代记录介质迁移到下一代记录介质的机制( 第三代后代第一代),并进一步记录下一代的媒体。 迁移机制生成迁移信息,包括第一代记录号与当前代的记录号之间的映射表,并将迁移信息作为数据保存在当前代的记录介质中。