公开(公告)号：GB2510747A

公开(公告)日：2014-08-13

申请号：GB201408043

申请日：2012-08-23

Applicant: IBM

Inventor： OISHI YUTAKA ,  HASEGAWA TOHRU ,  IMAI NAOKI ,  KAMIYA MASANORI ,  HIRATA TAKAMASA

IPC: G06F3/06 ,  G11B20/00

Abstract: The invention provides a method that detects whether data on a tape drive used in a file system has been altered. The method contains: (a) a step that prepares a first tape cartridge provided with a tape in which multiple files and an index information history have been stored in a WORM partition, and index information has been stored in an R/W partition; (b) a step that reads and compares the R/W partition index information and the index information at the end of the WORM partition; and (c) a step that determines that the R/W partition index information has been altered if the R/W partition index information does not match the index information at the end of the WORM partition.

公开(公告)号：DE102012217265A8

公开(公告)日：2013-06-27

申请号：DE102012217265

申请日：2012-09-25

Applicant: IBM

Inventor： NYLANDER-HILL PAMELA R ,  OISHI YUTAKA ,  MASUDA SETSUKO

IPC: G11B20/18

公开(公告)号：GB2497022A

公开(公告)日：2013-05-29

申请号：GB201303641

申请日：2011-08-22

Applicant: IBM

Inventor： BUTT KEVIN DALE ,  GRECO PAUL MERRILL ,  FRY SCOTT MILTON ,  KATAGIRI TAKASHI ,  OISHI YUTAKA

IPC: G06F3/06

Abstract: A method, system and program are disclosed for reordering User Data Segment (UDS) lists to reduce seek times when accessing data stored on tape media. A host application sends a list of UDSs to a target tape drive and requests the tape drive to reorder the list to improve performance. An ordered list of target User data Segments to retrieve from a target tape media is received. Information about the location of each UDS on the target media is processed to determine its corresponding physical position on the tape media. The resulting physical positions are then processed to generate a reordered UDS list, where the order of the User Data Segments is reordered according to their physical location on the target tape media. The reordered list of User Data Segments is then used to perform seek, reposition and read operations to read User Data Segments from the tape media.

公开(公告)号：GB2495613A

公开(公告)日：2013-04-17

申请号：GB201217981

申请日：2012-10-08

Applicant: IBM

Inventor： NYLANDER-HILL PAMELA RUTH ,  OISHI YUTAKA ,  MASUDA SETSUKO

IPC: G11B20/18 ,  G11B15/20

Abstract: A tape drive system includes a read channel configured for performing a portion of a data transfer operation and includes logic adapted for monitoring the data transfer operation for detecting one or more recovered or temporary errors (temps) within a sliding window spanning a last group of datasets processed 1102. Interference between first tier and second tier recovery methods is measured based on the monitoring 1104 and a backhitch delay is set based on conditions relating to the interference of first tier and second tier recovery methods as it relates to a determined error burst 1106. A back hitch is performed and at least one condition of the data transfer operation is altered after the backhitch delay 1108. The first tier may be a dynamic or inline error recovery tier and is focused on recovery of a single dataset and may leave a successful hardware modification in place rather than initiate a backhitch. The second tier can be a burst detection tier.

公开(公告)号：JP2013127701A

公开(公告)日：2013-06-27

申请号：JP2011277008

申请日：2011-12-19

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Machines Corporation

Inventor： OISHI YUTAKA ,  NAKAYAMA KOICHI ,  KATAGIRI TAKASHI ,  MORI YUKO

IPC: G06F21/64 ,  G11B20/10 ,  G11B27/00 ,  H04L9/32

CPC classification number: G06F12/00 ,  G06F21/64

Abstract: PROBLEM TO BE SOLVED: To provide a method for detecting alteration in the medium transition of WORM media, a storage device and a recording medium.SOLUTION: The reading and writing control of a storage device for generating and recording meta data for detecting alternation in medium transition of WORM media in transition destination media executes: a step of writing the data of transition source media (source media) in transition destination media (destination media); a step of storing the ID of the source media in the non-user storage area of destination media; a step of storing the feature information (hash, total data amount or the like) of the data in the non-user storage area; a step of confirming whether or not the ID of the source media is stored in the non-user storage area of the destination media or whether or not the feature information of the data is stored in the non-user storage area and whether or not the feature information and ID of the data is coincident with the stored information and ID; and a step of, when even one of confirmation results is negative, certifying alternation.

Abstract translation: 要解决的问题：提供一种用于检测WORM介质，存储设备和记录介质的介质转变中的变化的方法。 解决方案：用于生成和记录用于检测在转移目的地媒体中的WORM媒体的媒体转换中的交替的元数据的存储装置的读和写控制执行：将过渡源媒体（源媒体）的数据写入 过渡目的地媒体（目的地媒体）; 将源介质的ID存储在目的地介质的非用户存储区域中的步骤; 将数据的特征信息（哈希，总数据量等）存储在非用户存储区域中的步骤; 确认源介质的ID是否存储在目的地介质的非用户存储区域中的步骤，或者数据的特征信息是否存储在非用户存储区域中，以及是否 特征信息和数据的ID与存储的信息和ID一致; 并且当甚至一个确认结果为否定的时候，证明交替。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013030257A

公开(公告)日：2013-02-07

申请号：JP2011167267

申请日：2011-07-29

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Machines Corporation

Inventor： ITAGAKI HIROSHI ,  OISHI YUTAKA ,  OZEKI KAZUHIRO ,  YOSHIMURA KATSUMI

IPC: G11B15/68

CPC classification number: G11B20/18 ,  G06F11/0727 ,  G06F11/076 ,  G06F11/079 ,  G11B20/1816 ,  G11B27/36 ,  G11B2220/90

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

公开(公告)号：JP2012128937A

公开(公告)日：2012-07-05

申请号：JP2011259463

申请日：2011-11-28

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

Inventor： OISHI YUTAKA ,  KATAGIRI TAKASHI ,  NAKAYAMA KOICHI ,  MASUDA SETSUKO ,  MORI YUKO

IPC: G11B20/10 ,  G11B27/10

CPC classification number: G06F3/0641 ,  G06F3/0611 ,  G06F3/064 ,  G06F3/0682 ,  G06F3/0686 ,  G11B5/5508 ,  G11B5/5513 ,  G11B27/107 ,  G11B2020/10916 ,  G11B2220/90

Abstract: PROBLEM TO BE SOLVED: To provide a method, a computer system and a computer program for determining an access sequence of a plurality of data groups stored on a tape medium.SOLUTION: A data group in the plurality of data groups which has a beginning closest to a current position of the tape medium is selected as a first data group in the access sequence. A data group in the plurality of remaining data groups which has a beginning closest to an end of the first data group is selected as a second data group in the access sequence.

Abstract translation: 要解决的问题：提供一种用于确定存储在磁带介质上的多个数据组的访问顺序的方法，计算机系统和计算机程序。 解决方案：在访问序列中选择具有最接近磁带介质的当前位置的开始的多个数据组中的数据组作为第一数据组。 选择具有最接近第一数据组的结尾的开始的多个剩余数据组中的数据组作为访问序列中的第二数据组。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012014778A

公开(公告)日：2012-01-19

申请号：JP2010149607

申请日：2010-06-30

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

Inventor： OISHI YUTAKA ,  TAKETOMI TOMOKO ,  HIRATA TAKAMASA ,  WATANABE TERUE ,  MASUDA SETSUKO ,  MORI YUKO

IPC: G11B20/10

CPC classification number: G11B5/00813 ,  G11B20/10527 ,  G11B20/18 ,  G11B2020/10759 ,  G11B2220/90

Abstract: PROBLEM TO BE SOLVED: To improve write performance to a tape medium while securing resistance to errors.SOLUTION: In a controller 16 for a tape drive, a CM input/output part 44 recognizes a tape format, a tape variable acquisition part 45 acquires a tape variable corresponding to the tape format, a set variable acquisition part 46 acquires a set variable, a minimum number calculation part 47 uses the tape variable and the set variable to calculate a minimum number m of a sub-data set to write so as to secure resistance to a burst error. When a command processing part 41 receives a synchronous command, a buffer management part 42 generates an n pieces of sub-data set for storing data in the buffer, when n is smaller than m, padding is performed to make m pieces of sub-data set write data, and when n is equal to or larger than m, n pieces of sub-data set is made the write data, and a channel input/output part 43 writes the write data to the tape.

Abstract translation: 要解决的问题：提高对磁带介质的写入性能，同时确保抵抗错误。 解决方案：在用于磁带驱动器的控制器16中，CM输入/输出部分44识别磁带格式，磁带可变获取部分45获取与磁带格式对应的磁带变量，设定变量获取部分46获取 设定变量，最小数量计算部分47使用磁带变量和设定变量来计算要写入的子数据集的最小数量m，以确保对突发错误的抵抗力。 当命令处理部分41接收到同步命令时，缓冲器管理部分42在n小于m时生成用于存储数据的n个子数据组，当n小于m时，执行填充以使m个子数据 设置写入数据，并且当n等于或大于m时，将n个子数据组设置为写入数据，并且通道输入/输出部分43将写入数据写入磁带。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011113605A

公开(公告)日：2011-06-09

申请号：JP2009268918

申请日：2009-11-26

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

Inventor： OISHI YUTAKA ,  ITAGAKI HIROSHI ,  WATANABE TERUE ,  MASUDA SETSUKO

IPC: G11B20/12 ,  G11B20/10

CPC classification number: G11B27/107 ,  G11B27/032 ,  G11B2220/93

Abstract: PROBLEM TO BE SOLVED: To provide a tape recorder and a tape recording method for effectively using a tape by increasing a free space without losing necessary data on the tape.
SOLUTION: The tape recorder has a tape including at least one partition, and controls access to the tape. The tape recorder includes: a means for identifying the position of data on the tape; a means for sequentially reading necessary data areas in the data; a means for sequentially copying the necessary data areas to the beginning of a free space on the tape; a means for creating a continuous forward free space formed of unnecessary data areas and copy source areas of the necessary data areas on the tape; and a means for moving the beginning of the partition (BOP) to a position immediately after the forward free space and for updating positional information on the beginning of the partition.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种磁带记录器和磁带记录方法，用于通过增加自由空间而有效地使用磁带，而不会在磁带上丢失必要的数据。

解决方案：磁带录音机具有至少包含一个分区的磁带，并控制磁带的访问。 录像机包括：用于识别磁带上的数据位置的装置; 用于顺序读取数据中的必要数据区域的装置; 用于顺序地将所需数据区复制到磁带上的可用空间的开头的装置; 用于创建由不必要的数据区域形成的连续向前空闲空间并复制在磁带上的必要数据区域的源区域的装置; 以及用于将分区（BOP）的开始移动到紧接在前向空闲空间之后的位置并用于更新分区开始处的位置信息的装置。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010040106A

公开(公告)日：2010-02-18

申请号：JP2008202309

申请日：2008-08-05

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

Inventor： OISHI YUTAKA ,  NAKAYAMA KOICHI ,  MASUDA SETSUKO ,  NAKAMURA KENJI

IPC: G11B5/09 ,  G11B20/10 ,  G11B20/12

CPC classification number: G11B5/584

Abstract: PROBLEM TO BE SOLVED: To solve a following problem: data written in an ABF lap cannot be read out by being overwritten by the other data written in the ABF lap or data written in a normal lap. SOLUTION: In a controller 16 of a tape drive, a buffer managing part 42 detects the occurrence of flash, a channel input/output part 43 writes first data in a ABF lap of a normal direction at the occurrence of flash through a write-in head, and writes second data in a second ABF lap of the reverse direction at the occurrence of flash, after that, the part 43 writes first data and second data in a first normal lap of a normal direction adjacent to the first ABF lap. Among them, when the second data is written in the second ABF lap, an offset discriminating part 44 controls the write-in head so that the write-in head is offset to a direction of a second normal lap of a reverse direction used next to the first normal lap. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了解决以下问题：由ABF圈中写入的其他数据或正常圈中写入的数据覆盖ABF圈中写入的数据不能被读出。 解决方案：在磁带驱动器的控制器16中，缓冲器管理部分42检测闪光的发生，通道输入/输出部分43在闪光发生时在正常方向的ABF圈中写入第一数据，通过 写入头，并且在闪光发生时在反方向的第二ABF圈中写入第二数据，之后，部分43将第一数据和第二数据写入与第一ABF相邻的法线方向的第一正常圈 一圈。 其中，当在第二ABF圈中写入第二数据时，偏移识别部分44控制写入头，使得写入头偏移到除了第二个ABF圈之外的反向的第二正常搭接的方向 第一正常圈 版权所有（C）2010，JPO＆INPIT