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21. 发明申请

US20150127980A1 SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT FOR SYNCHRONIZING DATA WRITTEN TO TAPE INCLUDING WRITING AN INDEX INTO A DATA PARTITION 有权
标题翻译：用于同步写入数据的数据的系统，方法和计算机程序产品，包括将索引写入数据分区
公开(公告)号：US20150127980A1
公开(公告)日：2015-05-07
申请号：US14591457
申请日：2015-01-07
申请人： KIP CR P1 LP
发明人： Andrew Glen Klein , Robert C. Sims , William H. Moody, II
IPC分类号： G06F3/06
CPC分类号： G06F3/0619 , G06F3/0601 , G06F3/0643 , G06F3/0644 , G06F3/065 , G06F3/0682 , G06F3/0686 , G06F11/1456 , G06F11/1458 , G06F12/0868 , G06F17/30073 , G06F2212/213 , G11B20/1886 , G11B27/28
摘要： Disclosed is a system, method and computer program product for synchronizing data written to tape with improved data recovery. When writing data to tape, an index is kept in memory and updated to reflect change(s) to a file system mounted on tape. After a predetermined amount of data is written to a tape, a device may perform a sync operation, causing the index to be written into a data partition of the tape. If the sync operation is successful, the index in the index partition of the tape can be updated using a copy of the index in the data partition of the tape next time the tape is mounted. If the sync operation is not successful, the device may write the data to a different location on the same or another tape, update the index, and force another sync operation. This process can be repeated.
摘要翻译：公开了用于将写入磁带的数据与改进的数据恢复同步的系统，方法和计算机程序产品。将数据写入磁带时，索引将保存在内存中并进行更新，以反映安装在磁带上的文件系统的更改。在将预定量的数据写入磁带之后，设备可以执行同步操作，使索引被写入磁带的数据分区。如果同步操作成功，则磁带索引分区中的索引可以使用下次磁带安装在磁带的数据分区中的索引副本进行更新。如果同步操作不成功，则设备可以将数据写入相同或另一个磁带上的不同位置，更新索引，并强制执行另一个同步操作。这个过程可以重复。

22. 发明申请

US20190189157A1 EFFICIENT REWRITE USING LARGER CODEWORD SIZES 审中-公开
公开(公告)号：US20190189157A1
公开(公告)日：2019-06-20
申请号：US15847774
申请日：2017-12-19
申请人： International Business Machines Corporation
发明人： Roy D. Cideciyan , Simeon Furrer , Mark A. Lantz
IPC分类号： G11B20/18 , G11B5/008 , H03M13/27 , H03M13/15
CPC分类号： G11B20/1833 , G11B5/00813 , G11B20/1201 , G11B20/1886 , G11B2020/184 , H03M13/1515 , H03M13/2792
摘要： In one embodiment, a method includes writing a data set to a sequential access medium. The method also includes reading the data set immediately after being written to the sequential access medium in a read-while-write process to identify one or more faulty encoded data blocks, each of the one or more faulty encoded data blocks including at least one faulty codeword having symbols at least 10 bits in size. Moreover, the method includes rewriting a first of the one or more faulty encoded data blocks within a first encoded data block set to a particular logical track in the rewrite area of the sequential access medium selected from a predetermined subset of logical tracks. The predetermined subset of logical tracks includes D1+D2+1 logical tracks. Only one faulty encoded data block from a particular sub data set is rewritten in a single encoded data block set in the rewrite area.

23. 发明授权

US09741380B1 Generating defect signals in time based servo tape storage systems 有权
公开(公告)号：US09741380B1
公开(公告)日：2017-08-22
申请号：US15428043
申请日：2017-02-08
申请人： International Business Machines Corporation
发明人： Nhan X. Bui , Eiji Ogura , Tomoko Taketomi , Kazuhiro Tsuruta
IPC分类号： G11B5/584 , G11B20/18
CPC分类号： G11B5/584 , G11B20/1816 , G11B20/1886 , G11B2020/1826
摘要： In one embodiment, a computer-implemented method includes creating a spike in a servo channel from a predetermined start position to an end position, and storing servo data including at least a portion thereof generated during the spike. The spike has a predetermined amplitude. In another embodiment, a computer program product includes a computer readable storage medium having program instructions embodied therewith. The program instructions are executable by a controller to perform the foregoing method.

24. 发明授权

US09141478B2 Reconstructive error recovery procedure (ERP) using reserved buffer 有权
标题翻译：使用保留缓冲区的重建错误恢复过程（ERP）
公开(公告)号：US09141478B2
公开(公告)日：2015-09-22
申请号：US14149752
申请日：2014-01-07
申请人： International Business Machines Corporation
发明人： Takashi Katagiri , Pamela R. Nylander-Hill , Keisuke Tanaka
IPC分类号： H03M13/00 , G06F11/10 , G11B20/18
CPC分类号： G11B20/1886 , G06F11/1076 , G11B20/1803 , G11B20/1833 , G11B2020/1853
摘要： In one embodiment, a method for assembling data from a medium includes reading a data set from the medium repeatedly using different settings until either: a reconstructed data set is obtained, or a maximum number of rereads has been reached, the data set including a plurality of sub data sets, each sub data set having a plurality of rows, and after each reread of the data set, good rows of data are stored to iteratively construct a good data set from a plurality of good rows as determined by C1 and/or C2 error correction code (ECC).
摘要翻译：在一个实施例中，用于从介质组装数据的方法包括使用不同的设置从介质重复读取数据集，直到获得重建的数据集，或者已经达到最大数目的重新读取，该数据集包括多个的子数据集，每个子数据集具有多个行，并且在每次重新读取数据集之后，存储好的数据行以从多个好的行迭代地构造好的数据集，如由C1和/或 C2纠错码（ECC）。

25. 发明授权

US09104576B2 Dynamic buffer size switching for burst errors encountered while reading a magnetic tape 有权
标题翻译：读取磁带时遇到的突发错误的动态缓冲区大小切换
公开(公告)号：US09104576B2
公开(公告)日：2015-08-11
申请号：US14285271
申请日：2014-05-22
申请人： International Business Machines Corporation
发明人： Takashi Katagiri , Yuhko Mori , Pamela R. Nylander-Hill
IPC分类号： G06F11/07 , G11B20/18 , G11B20/10
CPC分类号： G11B20/1886 , G06F11/0793 , G11B20/10527 , G11B2020/10666
摘要： In one embodiment, a system for dynamically allocating a ring buffer includes a processor and logic integrated with and/or executable by the processor, the logic being configured to divide a ring buffer into a first portion and a second portion after detecting an error condition in data read from a data storage medium, wherein the first portion is allocated for processing normal read and/or write requests, and wherein the second portion is allocated for processing error recovery procedure (ERP) requests. In another embodiment, a method for dynamically allocating a ring buffer includes dividing a ring buffer into a first portion and a second portion after detecting an error condition in data read from a data storage medium, wherein the first portion is allocated for processing normal read and/or write requests, and wherein the second portion is allocated for processing ERP requests.
摘要翻译：在一个实施例中，用于动态分配环形缓冲器的系统包括与处理器集成和/或可执行的处理器和逻辑，该逻辑被配置为在检测到第一部分和第二部分之后，将环形缓冲器分成第一部分和第二部分从数据存储介质读取的数据，其中所述第一部分被分配用于处理正常的读取和/或写入请求，并且其中所述第二部分被分配用于处理错误恢复过程（ERP）请求。在另一个实施例中，一种用于动态分配环形缓冲器的方法包括：在检测到从数据存储介质读取的数据中的错误状况之后，将环形缓冲区划分成第一部分和第二部分，其中第一部分被分配用于处理正常读取， /或写请求，并且其中第二部分被分配用于处理ERP请求。

26. 发明申请

US20150193303A1 RECONSTRUCTIVE ERROR RECOVERY PROCEDURE (ERP) USING RESERVED BUFFER 有权
标题翻译：重建错误恢复程序（ERP）使用保留缓冲区
公开(公告)号：US20150193303A1
公开(公告)日：2015-07-09
申请号：US14149752
申请日：2014-01-07
申请人： International Business Machines Corporation
发明人： Takashi Katagiri , Pamela R. Nylander-Hill , Keisuke Tanaka
IPC分类号： G06F11/10 , G11B20/18
CPC分类号： G11B20/1886 , G06F11/1076 , G11B20/1803 , G11B20/1833 , G11B2020/1853
摘要： In one embodiment, a method for assembling data from a medium includes reading a data set from the medium repeatedly using different settings until either: a reconstructed data set is obtained, or a maximum number of rereads has been reached, the data set including a plurality of sub data sets, each sub data set having a plurality of rows, and after each reread of the data set, good rows of data are stored to iteratively construct a good data set from a plurality of good rows as determined by C1 and/or C2 error correction code (ECC).
摘要翻译：在一个实施例中，用于从介质组装数据的方法包括使用不同的设置从介质重复读取数据集，直到获得重建的数据集，或者已经达到最大数目的重新读取，该数据集包括多个的子数据集，每个子数据集具有多个行，并且在每次重新读取数据集之后，存储好的数据行以从多个好的行迭代地构造好的数据集，如由C1和/或 C2纠错码（ECC）。

27. 发明授权

US08811133B2 Writing system, writing device, and writing method 有权
标题翻译：写作系统，书写设备和书写方式
公开(公告)号：US08811133B2
公开(公告)日：2014-08-19
申请号：US13751308
申请日：2013-01-28
申请人： Fujitsu Limited
发明人： Yoshiaki Ochi
IPC分类号： G11B15/24 , G11B20/18 , G11B7/085
CPC分类号： G11B20/18 , G11B20/1886 , G11B2220/63
摘要： A writing-system comprises a first and a second writing-device, and is connected to an information-processor-apparatus that obtains unwritten-data from the first and the second writing-devices when a notification is received, the notification indicating that the unwritten-data is generated while writing data on a recording-medium used by either of the writing-devices, wherein the first writing-device comprises a first writing-unit, when the unwritten-data is generated while writing data on a recording-medium, transmits to the information-processor-apparatus, dummy information for inhibiting the unwritten-data to be obtained by the information-processor-apparatus, and writes the unwritten-data to a memory-unit, the recording-medium and the memory-unit are included in a cartridge accommodated in the first writing-device, and the second writing-device comprises a second writing-unit that writes, on the recording-medium, the unwritten-data stored in the memory-unit when the cartridge is moved from the first writing-device to the second writing-device.
摘要翻译：写入系统包括第一和第二写入装置，并且连接到当接收到通知时从第一和第二写入装置获得未写入数据的信息处理器装置，指示未写入的通知在由任一个写入装置使用的记录介质上写入数据时产生数据，其中第一写入装置包括第一写入单元，当在记录介质上写入数据时产生未写入的数据，向信息处理器装置发送用于禁止由信息处理装置获取的未写入数据的伪信息，并将未写入数据写入存储单元，记录介质和存储单元是包括在容纳在第一写入装置中的盒中，并且第二写入装置包括第二写入单元，其在记录介质上写入当盒是mo时存储在存储单元中的未写入数据从第一写入装置移动到第二写入装置。

28. 发明授权

US08810944B1 Dynamic buffer size switching for burst errors encountered while reading a magnetic tape 有权
标题翻译：读取磁带时遇到的突发错误的动态缓冲区大小切换
公开(公告)号：US08810944B1
公开(公告)日：2014-08-19
申请号：US13943674
申请日：2013-07-16
申请人： International Business Machines Corporation
发明人： Takashi Katagiri , Yuhko Mori , Pamela R. Nylander-Hill
IPC分类号： G11B5/09
CPC分类号： G11B20/1886 , G06F11/0793 , G11B20/10527 , G11B2020/10666
摘要： In one embodiment, a system includes a processor and logic integrated with and/or executable by the processor, the logic configured to: read data from a data storage medium, detect an error condition in data read from the data storage medium, determine how to allocate a ring buffer into a first portion and a second portion, the ring buffer being allocated for processing normal read and/or write requests, divide the ring buffer into the first portion and the second portion, wherein the first portion is allocated for processing normal read and/or write requests, and wherein the second portion is allocated for processing ERP requests, perform ERP on the data using the second portion of the ring buffer, determine that the ERP has been completed, and unify the ring buffer after the ERP is completed and allocate an entirety of the ring buffer for processing normal read and/or write requests.
摘要翻译：在一个实施例中，系统包括与处理器集成和/或可执行的处理器和逻辑，该逻辑被配置为：从数据存储介质读取数据，检测从数据存储介质读取的数据中的错误状况，确定如何将环形缓冲器分配到第一部分和第二部分中，环形缓冲器被分配用于处理正常的读取和/或写入请求，将环形缓冲区分成第一部分和第二部分，其中第一部分被分配用于处理正常读取和/或写请求，并且其中第二部分被分配用于处理ERP请求，使用环形缓冲器的第二部分对数据执行ERP，确定ERP已经完成，并且在ERP之后统一环形缓冲器完成并分配整个环形缓冲区以处理正常的读取和/或写入请求。

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