公开(公告)号：JP2011123834A

公开(公告)日：2011-06-23

申请号：JP2009283204

申请日：2009-12-14

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： BOKU TAKASHI ,  OISHI YUTAKA ,  MOTOKI TOSHIYASU ,  MIMA SHINSUKE

IPC: G06F3/06 ,  G06F12/00

CPC classification number: G06F12/0866 ,  G06F3/061 ,  G06F3/0649 ,  G06F3/0685 ,  G06F2212/224

Abstract: PROBLEM TO BE SOLVED: To reduce a mount time in an execution schedule of an application by reducing recall processing at timing of a mount request of the application. SOLUTION: A tape mount control method includes; a step wherein a virtual tape drive (VTD) of a virtual tape server receives a mount request for a logical volume (LVOL) from a host system; a step wherein a control unit of the virtual tape server determines whether the logical volume exists in a virtual storage area (cache) or not; a step wherein the control unit determines whether the mount request is a write request or not if it is determined that the logical volume does not exist in the virtual storage area; a step wherein, if the mount request is determined to be a write request, the mount completion is reported to the host system without reading out the mount-requested logical volume into the virtual storage area from an actual tape library device externally connected to the virtual tape server. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：通过在应用的安装请求的定时减少召回处理来减少应用的执行时间表中的安装时间。 胶带安装控制方法包括： 虚拟磁带服务器的虚拟磁带驱动器（VTD）从主机系统接收到对逻辑卷（LVOL）的安装请求的步骤; 虚拟磁带服务器的控制单元确定逻辑卷是否存在于虚拟存储区域（cache）中的步骤; 步骤，其中如果确定所述逻辑卷不存在于所述虚拟存储区域中，则所述控制单元确定所述安装请求是否为写入请求; 其中，如果所述安装请求被确定为写入请求，则将所述安装完成报告给所述主机系统，而不从所述虚拟的外部连接到所述虚拟的磁带库设备从所述虚拟存储区域读出所述安装请求的逻辑卷 磁带服务器。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010027118A

公开(公告)日：2010-02-04

申请号：JP2008185083

申请日：2008-07-16

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： MASUDA SETSUKO ,  OISHI YUTAKA ,  NAKAMURA KENJI ,  TANAKA KEISUKE

IPC: G11B5/09 ,  G11B20/10

CPC classification number: G11B5/584

Abstract: PROBLEM TO BE SOLVED: To accelerate reading out of a specific kind of data from among a plurality of kinds of data with different formats.
SOLUTION: In a controller 16 of a tape drive, a command processing unit 41 receives a request for reading out old data behind EOD of new data; a channel input/output unit 43 receives data read out with a read head in response to the request; and a buffer managing unit 42 receives this data. A header information determining unit 44 determines whether this data includes header information of the old data. If it is determined that this data includes the header information of the old data, a data set determining unit 45 determines whether a data set is extractable from this data. If it is determined that the data set is not extractable, a move signal output unit 47 outputs a signal for moving the read head in a direction of the new data.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：加速从具有不同格式的多种数据中读出特定种类的数据。 解决方案：在磁带驱动器的控制器16中，命令处理单元41接收新数据背后的EOD读出旧数据的请求; 通道输入/输出单元43响应于该请求接收用读取头读出的数据; 并且缓冲器管理单元42接收该数据。 头信息确定单元44确定该数据是否包括旧数据的头信息。 如果确定该数据包括旧数据的标题信息，则数据集确定单元45确定数据集是否可从该数据中提取。 如果确定数据集不可提取，则移动信号输出单元47输出用于在新数据的方向上移动读取头的信号。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009163835A

公开(公告)日：2009-07-23

申请号：JP2008001685

申请日：2008-01-08

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 ,  NAKAMURA KENJI ,  MASUDA SETSUKO

IPC: G11B20/10 ,  G11B20/18

CPC classification number: G11B20/1883 ,  G11B20/1833 ,  G11B27/36 ,  G11B2020/183 ,  G11B2020/1836 ,  G11B2020/1896 ,  G11B2220/20 ,  G11B2220/90

Abstract: PROBLEM TO BE SOLVED: To provide an information recording device capable of performing retrial having a position shifted during overwriting of data set written in a recording medium.
SOLUTION: To enable identification based on a writing order number of a data set and the number of writing times (WP) of the data set of the number, data sets are sequentially written in a recording medium. By using a data set written in the recording medium as an old data set, the old data set is substantially overwritten with a data of a new number. A write control means is provided for executing the overwriting means of the old data set by using a value having WP added as a new WP, when an error occurs during overwriting, in a position where the recording medium is shifted forward from the position of the old data set of the recording medium. A predetermined distance is a distance where overwriting of a part of the old data set with a new data set inhibits error correction.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种信息记录装置，其能够执行在重写写入记录介质中的数据集时移位的重试。 解决方案：为了能够基于数据集的写入顺序号和数字的数据组的写入次数（WP）来进行识别，数据组被顺序地写入记录介质。 通过使用写在记录介质中的数据集作为旧数据集，旧数据集被新数字的数据基本上覆盖。 一种写控制装置，用于通过使用添加有WP作为新WP的值来执行旧数据集的重写装置，当在重写期间发生错误时，在记录介质从位置 记录介质的旧数据集。 预定距离是用新数据集重写一部分旧数据集的距离，禁止纠错。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008310902A

公开(公告)日：2008-12-25

申请号：JP2007159126

申请日：2007-06-15

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

IPC: G11B20/18

CPC classification number: G11B20/1816 ,  G11B2220/90

Abstract: PROBLEM TO BE SOLVED: To provide a technique of detecting a defect having a relatively narrow range on a tape medium.
SOLUTION: A tape defect detecting device includes a reading unit for reading data from a tape medium, an error correcting unit for performing error correction with respect to the data read by the reading unit, a number-of-times-of-correction counting unit for counting the number of times of error correction by the error correcting unit for each of a plurality of regions into which the tape medium is divided, a temporary storing unit for temporarily storing the number of times of error correction counted by the number-of-times-of-correction counting unit for each region, and a detection unit for detecting a defect on the tape medium based on a distribution on the tape medium of regions having a relatively large number of times of error correction as compared to those of other regions. The detection unit preferably uses the Gini coefficient to detect a situation in which the regions having a relatively large number of times of error correction as compared to those of other regions are concentrated at a particular position on the tape medium.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种在带介质上检测具有相对窄范围的缺陷的技术。 解决方案：磁带缺陷检测装置包括用于从磁带介质读取数据的读取单元，用于对由读取单元读取的数据执行纠错的纠错单元， 校正计数单元，用于对由所述带介质划分成的多个区域中的每个区域进行纠错单元的误差校正次数的计数;临时存储单元，用于临时存储以所述数量为单位的误差校正次数 每个区域的校正次数计数单元;以及检测单元，用于基于在具有相对大量的错误校正次数的区域上的带介质上的分布来检测带介质上的缺陷，与那些 的其他地区。 检测单元优选使用基尼系数来检测与其他区域相比具有相对大量的纠错次数的区域集中在带介质上的特定位置的情况。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2007095231A

公开(公告)日：2007-04-12

申请号：JP2005286513

申请日：2005-09-30

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： WATANABE TERUE ,  ITAGAKI HIROSHI ,  NAKAYAMA KOICHI ,  NAGURA HIROHISA ,  KATAGIRI TAKASHI ,  OISHI YUTAKA ,  SHIRATORI TOSHIYUKI

IPC: G11B20/18 ,  G11B20/10

CPC classification number: G11B5/09 ,  G11B5/00821 ,  G11B20/10527 ,  G11B20/1201 ,  G11B2020/10666 ,  G11B2020/10759 ,  G11B2220/90

Abstract: PROBLEM TO BE SOLVED: To provide a write and read method for not performing a backhitch operation for avoiding the violation of a 4m rule while it is determined to write a sequential data set within 4m in a tape drive of LTO or the like. SOLUTION: The write and read control method for recording at least one data set in 4m in the length direction of a tape medium 550 comprises: a step of successively storing a plurality of blocks 510 of various sizes sent from a host in a buffer 500 divided by the segment 520 of a fixed size; a step of writing the contents of the segment to the tape medium as a data set when the segment 520 is prepared by at least one block 510 and writing a Null data set to the tape medium within 4m when the next segment 520 is not prepared while the tape medium moves for 4m; and a step of reading the data set to the segment of the buffer 500. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种写入和读取方法，用于在确定在4T的磁带驱动器内写入4m内的顺序数据集时，不执行用于避免4m规则的违反操作的后退操作 。 解决方案：用于在带介质550的长度方向上记录至少一个4m数据集的写入和读取控制方法包括：将主机发送的各种尺寸的多个块510连续存储在 缓冲器500除以固定尺寸的段520; 当片段520由至少一个块510准备并且当下一个段520未准备好时将空的数据集写入磁带介质4m内时，将段的内容写入磁带介质作为数据集的步骤， 磁带介质移动4m; 以及读取缓冲器500的段的数据集的步骤。（C）2007，JPO＆INPIT

公开(公告)号：JP2013093084A

公开(公告)日：2013-05-16

申请号：JP2011235707

申请日：2011-10-27

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 ,  OTA YUMIKO

IPC: G11B20/10 ,  G06F3/06

CPC classification number: G06F3/0613 ,  G06F3/061 ,  G06F3/0656 ,  G06F3/0674 ,  G06F3/0682 ,  G11B5/00813 ,  G11B2020/1062 ,  G11B2020/10814 ,  G11B2220/90

Abstract: PROBLEM TO BE SOLVED: To provide a storage device capable of adjusting a drive transfer rate even in the case that a constant host transfer rate intermittently falls.SOLUTION: A recorder includes a buffer for temporarily storing data to be read and written with a host device, a recording medium for sequentially recording a plurality of pieces of data, and a control part for controlling data reading and writing between the buffer and the recording medium. The control part measures a plurality of host transfer rates at which data is transmitted/received to/from the host device, adjusts a drive transfer rate at which data is to be transmitted/received to/from the recording medium so as to come close to the host transfer rate, determines whether the host transfer rate reduces by a second reduction amount to an average host transfer rate in a first ratio with respect to the measured plurality of host transfer rates in order to recognize whether the host transfer rate intermittently falls, and selects the adjusted drive transfer rate on the basis of the determination result so as to be lowered to a third level. This lowering can improve a long-term data transfer rate.

Abstract translation: 要解决的问题：提供即使在恒定的主机传送速率间歇性下降的情况下也能够调节驱动传送速率的存储装置。 解决方案：记录器包括用于临时存储要用主机装置读取和写入的数据的缓冲器，用于顺序记录多条数据的记录介质，以及用于控制缓冲器之间的数据读取和写入的控制部分 和记录介质。 控制部分测量向主机设备发送/接收数据的多个主机传输速率，调整要从/从记录介质发送/接收数据的驱动传输速率，以便接近于 主机传输速率，确定主机传输速率是否相对于所测量的多个主机传输速率以第一比例将平均主机传输速率降低了第二减少量，以便识别主机传输速率是否间歇性地下降;以及 根据确定结果选择调整后的驱动传输速率，以便降低到第三级。 这种降低可以提高长期的数据传输速率。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012238125A

公开(公告)日：2012-12-06

申请号：JP2011105734

申请日：2011-05-10

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： IMAI NAOKI ,  OISHI YUTAKA ,  HASEGAWA TORU ,  KAMIYA MASANORI

IPC: G06F12/00 ,  G06F3/06

CPC classification number: H04L67/1097 ,  G06F17/30156

Abstract: PROBLEM TO BE SOLVED: To achieve the use efficiency of a plurality of storages as a whole in the case of storing data in those storages.SOLUTION: In a storage node 20, a meta data extraction part 21 is configured to extract meta data from storage object data from a client 10, and a node determination part 24 is configured to, on the basis of the capacity information of each storage node stored in a capacity information storage part 22 and summary data obtained by integrating the meta data of the storage data of each storage node stored in a summary data storage part 23, determine a storage node in which the storage object data should be stored, and a data transfer part 25 is configured to, when the determined storage node is a self-node, store the storage object data in a data storage part 27, and a summary data registration part 26 is configured to register the extracted meta data in the summary data of the self-node, and the data transfer part 25 is configured to, when the determined storage node is another node, transfer the storage object data to the node.

Abstract translation: 要解决的问题：为了在存储这些存储器中的数据的情况下，实现多个存储器的整体的使用效率。 解决方案：在存储节点20中，元数据提取部分21被配置为从客户端10从存储对象数据中提取元数据，并且节点确定部分24被配置为基于来自客户端10的容量信息 存储在容量信息存储部22中的每个存储节点和存储在概要数据存储部23中的存储数据的存储数据的元数据的集成获得的摘要数据，决定存储对象数据的存储节点 ，并且数据传送部25被配置为当确定的存储节点是自节点时，将存储对象数据存储在数据存储部27中，并且概要数据注册部26被配置为将所提取的元数据注册到 自身节点的摘要数据和数据传送部25被配置为当确定的存储节点是另一个节点时，将存储对象数据传送到节点。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012094220A

公开(公告)日：2012-05-17

申请号：JP2010242238

申请日：2010-10-28

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

IPC: G11B27/00 ,  G11B20/10 ,  G11B27/10

CPC classification number: G11B20/10527 ,  G06F3/0608 ,  G06F3/0641 ,  G06F3/0682 ,  G11B2020/1062

Abstract: PROBLEM TO BE SOLVED: To provide a writing (deduplication) method for eliminating overlapping of recorded records of a storage device.SOLUTION: The storage device includes a buffer 1 for storing the No of a record recorded in a recording medium, a hash value of the record, and a writing frequency, and a buffer 2 for connecting contents of the record to the No of the record and the hash value to store them, and includes a step for receiving a writing request of a record (new record) from a host, a step for calculating a hash value (new S) of the new record, a step for confirming whether the new S exists in the buffer 2, a step for comparing whether new data coincides with the record stored in the buffer 2 corresponding to the new S when the new S exists in the buffer 2 in the confirmation step, and a step for writing a pointer (record No) to the record that has already been stored in the recording medium or the buffer as writing data of the new data in the recording medium when the new record coincides with the record in the step for comparing.

Abstract translation: 要解决的问题：提供一种用于消除存储设备的记录记录的重叠的写入（重复数据删除）方法。 解决方案：存储装置包括：缓冲器1，用于存储记录在记录介质中的记录的No，记录的散列值和写入频率;以及缓冲器2，用于将记录的内容连接到No 的记录和散列值以存储它们，并且包括用于从主机接收记录（新记录）的写入请求的步骤，用于计算新记录的散列值（新S）的步骤，用于 确认缓冲器2中是否存在新的S;当确认步骤中存在缓冲器2中存在新的S时，比较新数据是否与存储在与新S对应的缓冲器2中的记录一致的步骤;以及步骤 当新记录与比较步骤中的记录一致时，将已经存储在记录介质或缓冲器中的记录写入指针（记录号No）作为记录介质中的新数据的写入数据。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2010055690A

公开(公告)日：2010-03-11

申请号：JP2008219803

申请日：2008-08-28

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

IPC: G11B20/12 ,  G11B20/10

CPC classification number: G11B5/584 ,  G11B5/00834 ,  G11B5/4893 ,  G11B5/4969

Abstract: PROBLEM TO BE SOLVED: To read data without losing it even if an error occurs, when a format of data already recorded in a tape medium is changed.
SOLUTION: In a controller 16 of a tape drive, a buffer management section 42 reads a data set written in an old format only by the capacity of the buffer, and stores a read position when the buffer becomes full in a position storage section 44 as a next read start position. Then a DSIT generation section 45 generates a DSIT (Data Set Information Table) which includes the next read start position, and the buffer management section 42 adds the DSIT to the data set and writes it in a spare area. Then the DSIT generation section 45 generates the DSIT including the information which specifies a corresponding data set in the spare area and the next read start position, and the buffer management section 42 adds the DSIT to the data set and overwrites it using a new format.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：即使发生错误，即使在已经记录在磁带介质中的数据格式发生变化的情况下读取数据也不会丢失数据。 解决方案：在磁带驱动器的控制器16中，缓冲器管理部42仅通过缓冲器的容量读取以旧格式写入的数据集，并且当缓冲器满载时将读取位置存储在位置存储器 第44段作为下一个读取开始位置。 然后，DSIT生成部件45生成包括下一个读取开始位置的DSIT（数据集信息表），并且缓冲器管理部分42将DSIT添加到数据集中并将其写入备用区域。 然后，DSIT生成部45生成包括指定备用区域和下一个读取开始位置中的相应数据集的信息的DSIT，并且缓冲器管理部分42将DSIT添加到数据集并使用新格式覆盖它。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2008276879A

公开(公告)日：2008-11-13

申请号：JP2007120301

申请日：2007-04-27

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 ,  NAKAMURA KENJI ,  MASUDA SETSUKO

IPC: G11B20/18 ,  G11B20/10 ,  G11B20/12

CPC classification number: G11B5/584 ,  G11B15/05

Abstract: PROBLEM TO BE SOLVED: To provide a write retry method for reducing permanent errors, and a magnetic tape device including the method.
SOLUTION: A write control method for writing at least one data set in a predetermined distance of a tape medium in a longitudinal direction repeats a retry operation for writing data set in a tape position where a tape medium is forwarded only by a small distance when an error occurs while writing the data set. When either the repetition step reaches the predetermined number of times or the write limit time of one data set is exceeded is achieved, the tape medium is forwarded from the tape position of the data set correctly written immediately before in time to a position immediately before the forward tape position of a predetermined distance to execute a write retry operation. The number of permanent errors is reduced as compared with the conventional case within a timeout. Thus, unnecessary tape cartridge replacing requests are reduced.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于减少永久性错误的写入重试方法，以及包括该方法的磁带装置。 解决方案：用于在纵向方向上写入带介质的预定距离中的至少一个数据集的写入控制方法重复用于将数据集写入磁带介质被转发的磁带位置的重试操作， 编写数据集时发生错误时的距离。 当重复步骤达到预定次数或超过一个数据集的写入限制时间时，磁带介质从紧接在时间之前正确写入的数据集的磁带位置转发到紧接在 转发预定距离的磁带位置以执行写入重试操作。 与超时中的常规情况相比，永久性错误的数量减少。 因此，减少了不必要的磁带盒更换请求。 版权所有（C）2009，JPO＆INPIT