Data recorder, and method for evaluating host data transfer performance of data recorder
    2.
    发明专利
    Data recorder, and method for evaluating host data transfer performance of data recorder 有权
    数据记录器,以及用于评估数据记录仪主机数据传输性能的方法

    公开(公告)号:JP2007241897A

    公开(公告)日:2007-09-20

    申请号:JP2006066625

    申请日:2006-03-10

    Abstract: PROBLEM TO BE SOLVED: To provide a technology for accurately specifying either a host or the drive as the factor of a deterioration in the performance of data transfer to a drive in a tape recorder connected to the host. SOLUTION: This data recorder for storing data in response to a write request of the host is provided with a buffer for temporarily storing data transferred from the host and a recording medium for recording the data stored in the buffer, makes the area of the data written in the recording medium in the data stored in the buffer an empty area of the buffer, stores subsequent data from the host in the empty area of the buffer, actually measures time when no empty area exists in the buffer as pause time and sends a warning to the host when the pause time is larger than a reference value. When the data recorder is a tape recorder, the recorder has an advantageous effect to be able to notify the host of exchange of the tape recorder, its components and a detachable tape cartridge. COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种用于将主机或驱动器精确地指定为连接到主机的磁带录像机中的驱动器的数据传输性能恶化的因素的技术。 解决方案:用于响应于主机的写请求而存储数据的数据记录器被提供有用于临时存储从主机传送的数据的缓冲器和用于记录存储在缓冲器中的数据的记录介质, 将存储在缓冲器中的数据中的数据写入缓冲器的空白区域中的数据,将来自主机的后续数据存储在缓冲器的空白区域中,实际上测量缓冲器中没有空区域的时间,作为暂停时间, 当暂停时间大于参考值时,向主机发送警告。 当数据记录器是磁带记录器时,记录器具有能够通知磁带录音机,其组件和可拆卸磁带盒的交换主机的有利效果。 版权所有(C)2007,JPO&INPIT

    LTFS(LinearTapeFileSystem)によって実現するWORMカートリッジのサポート

    公开(公告)号:JP2015090655A

    公开(公告)日:2015-05-11

    申请号:JP2013231072

    申请日:2013-11-07

    Applicant: IBM

    Abstract: 【課題】インデックスパーティションの更新頻度を大幅に減らし、インデックスパーティションがデータパーティションよりも先にあふれてしまうことを防ぐ方法を提供する。【解決手段】LTFSをソフトウェア的に拡張して、インデックスパーティションの消費を少なくして、必要でないデータの追記を無くす。通常のアンマウント時にはメタ情報をインデックスパーティションに記録する代わりに、HDDなど別のローカルのストレージに記録しておき、カートリッジをライブラリから取り出すときのみ、インデックスパーティションを更新する。【選択図】図5

    Device and method for migrating data recorded in recording medium
    4.
    发明专利
    Device and method for migrating data recorded in recording medium 有权
    记录介质记录数据的设备和方法

    公开(公告)号:JP2010152603A

    公开(公告)日:2010-07-08

    申请号:JP2008329430

    申请日:2008-12-25

    Abstract: PROBLEM TO BE SOLVED: To improve performance under the consideration of access frequency in data migration. SOLUTION: In a controller 16 of a tape drive, if a command processing part 61 receives a data read instruction, a channel input/output part 63 reads data from a tape, Ram-count showing the number of times that the tape is mounted for reading is stored in each data on the tape, and Dm-readfreq showing the history of the number of data reads is stored in the read data. In data migration, a CM input/output part 64 reads the Ram-count and Dm-readfreq, a frequency calculation part 65 calculates the ratio of the number of times shown by Dm-readfreq to the Ram-count as access frequency, and a migration control part 66 controls a buffer management part 62 or the like so that the data read from the migration source tape can be recorded in the order of access frequency into the migration destination tape. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题:在数据迁移中考虑访问频率来提高性能。 解决方案:在磁带驱动器的控制器16中,如果命令处理部分61接收到数据读取指令,则通道输入/输出部分63从磁带读取数据,表示磁带的次数的拉姆计数 被安装用于读取的数据被存储在磁带上的每个数据中,并且显示数据读取数量的历史的Dm-readfreq存储在读取的数据中。 在数据迁移中,CM输入/输出部分64读取Ram-count和Dm-readfreq,频率计算部分65计算由Dm-readfreq显示的次数与Ram-count的次数之比作为存取频率, 迁移控制部分66控制缓冲器管理部分62等,使得可以以访问频率的顺序将从迁移源磁带读取的数据记录到迁移目的磁带中。 版权所有(C)2010,JPO&INPIT

    Device and method for performing processing about removable medium
    5.
    发明专利
    Device and method for performing processing about removable medium 有权
    用于对可移除介质进行处理的装置和方法

    公开(公告)号:JP2013030257A

    公开(公告)日:2013-02-07

    申请号:JP2011167267

    申请日:2011-07-29

    Abstract: PROBLEM TO BE SOLVED: To enable a drive to make a determination based on error information stored by a plurality of drives or a plurality of media.SOLUTION: In a controller 30 of a tape drive, when an error recovery part 32 cannot recover an error detected by an error detection part 31, an error report generation part 33 generates an error report, an error information acquisition part 34 acquires error information of a tape drive and a cartridge loaded in the tape drive, an error information exchange part 35 acquires error information of another tape drive and a cartridge loaded in the other tape drive, an error cause determination part 37 determines whether an error cause relates to the tape drive or the cartridge on the basis of the error information, an error report update part 38 updates the error report with the determination result, and an error report output part 39 outputs the updated error report to a host.

    Abstract translation: 要解决的问题:使得驱动器能够基于由多个驱动器或多个介质存储的错误信息进行确定。 解决方案:在磁带驱动器的控制器30中,当错误恢复部分32无法恢复由错误检测部分31检测到的错误时,错误报告生成部分33生成错误报告,错误信息获取部分34获取 磁带驱动器和装载在磁带驱动器中的磁带盒的错误信息,错误信息交换部件35获取另一磁带驱动器和装载在另一个磁带驱动器中的磁带盒的错误信息,错误原因确定部件37确定错误原因是否相关 基于错误信息到磁带驱动器或盒式磁带,错误报告更新部分38用确定结果更新错误报告,并且错误报告输出部分39将更新的错误报告输出到主机。 版权所有(C)2013,JPO&INPIT

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