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1. 发明授权

US10014025B1 System and method for tape layout optimization 有权
公开(公告)号：US10014025B1
公开(公告)日：2018-07-03
申请号：US15655289
申请日：2017-07-20
申请人： Quantum Corporation
发明人： Suayb S. Arslan , Turguy Goker , Jaewook Lee , Hoa Le
IPC分类号： G11B5/09 , G11B20/00 , G11B20/18 , G11B20/12 , G11B20/10
CPC分类号： G11B20/00123 , G11B20/1201 , G11B20/1254 , G11B20/1866 , G11B20/1886 , G11B2020/10722 , G11B2020/1255 , G11B2020/1893
摘要： A tape layout module for determining a tape layout allocation strategy for laying out data on tape, the data being organized into a plurality of fixed-size subdata sets with each of the plurality of subdata sets including a plurality of codeword interleaves, the tape including a plurality of media defect characteristics, includes a tape layout optimization system including a processor that receives information on the plurality of media defect characteristics. The tape layout optimization system determines the tape layout allocation strategy based at least in part on at least one of the plurality of media defect characteristics. Additionally, the tape layout optimization system can determine the tape layout allocation strategy further based on distance spectra between pairs of the plurality of codeword interleaves. Further, the tape layout optimization system can determine the tape layout allocation strategy by selectively utilizing at least one tape layout parameter.

2. 发明授权

US09583136B2 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：US09583136B2
公开(公告)日：2017-02-28
申请号：US14752923
申请日：2015-06-27
申请人： International Business Machines Corporation
发明人： Takashi Katagiri , Yuhko Mori , Pamela R. Nylander-Hill
IPC分类号： G11B20/18 , G06F11/07 , G11B20/10
CPC分类号： G11B20/1886 , G06F11/0793 , G11B20/10527 , G11B2020/10666
摘要： In one embodiment, a method for dynamically allocating a memory includes dividing a memory into a first portion and a second portion in response to detecting an error condition when reading data from a data storage medium. The first portion is allocated for processing normal read and/or write requests. The second portion is allocated for processing error recovery procedure (ERP) requests. In another embodiment, a computer program product for dynamically allocating a memory includes a computer readable storage medium having program code embodied therewith. The program code is readable/executable by a processor to divide, by the processor, a memory into a first portion and a second portion in response to detecting an error condition when reading data from a data storage medium. The first portion is allocated for processing normal read and/or write requests. The second portion is allocated for processing ERP requests.
摘要翻译：在一个实施例中，用于动态分配存储器的方法包括：当从数据存储介质读取数据时，响应于检测到错误状况，将存储器划分为第一部分和第二部分。第一部分被分配用于处理正常的读取和/或写入请求。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，用于动态分配存储器的计算机程序产品包括具有实施的程序代码的计算机可读存储介质。程序代码由处理器读取/执行，以便在从数据存储介质读取数据时响应于检测到错误状况而将存储器划分成第一部分和第二部分。第一部分被分配用于处理正常的读取和/或写入请求。第二部分被分配用于处理ERP请求。

3. 发明申请

US20150371676A1 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：US20150371676A1
公开(公告)日：2015-12-24
申请号：US14838317
申请日：2015-08-27
申请人： International Business Machines Corporation
发明人： Takashi Katagiri , Pamela R. Nylander-Hill , Keisuke Tanaka
IPC分类号： G11B20/18 , G06F11/10
CPC分类号： G11B20/1886 , G06F11/1076 , G11B20/1803 , G11B20/1833 , G11B2020/1853
摘要： In one embodiment, a tape drive includes a reserved data buffer and logic integrated with and/or executable by a processor. The logic is configured to read a data set from a medium and store a first portion of the data set to the reserved data buffer in response to a determination that the first portion of the data set is correctable using C2 error correction code (ECC). The logic is also configured to replace any stored row of a non-C2-correctable portion of the data set stored to the reserved data buffer with a corresponding row of the data set read from the medium in response to a determination that the stored row of the non-C2-correctable portion of the data set has an equal amount or more C1-correctable error therein than the corresponding row of the data set read from the medium.
摘要翻译：在一个实施例中，磁带驱动器包括与处理器集成和/或可执行的保留数据缓冲器和逻辑。逻辑被配置为响应于使用C2纠错码（ECC）可以校正数据集的第一部分的确定，从介质读取数据集并将数据集的第一部分存储到保留数据缓冲器。该逻辑还被配置为响应于确定所存储的存储的行的行，从存储在保留数据缓冲器中的数据集的非C2可校正部分的任何存储行与从介质读取的数据集的对应行相替换数据组的非C2可校正部分具有与从介质读取的数据集的相应行相等或更多的C1可校正误差。

4. 发明申请

US20180102141A1 DETECTING MEDIA DEFECTS 审中-公开
公开(公告)号：US20180102141A1
公开(公告)日：2018-04-12
申请号：US15629629
申请日：2017-06-21
申请人： International Business Machines Corporation
发明人： Robert G. Biskeborn
IPC分类号： G11B20/18 , G11B5/008
CPC分类号： G11B20/1816 , G11B5/00813 , G11B5/00817 , G11B5/313 , G11B20/1886 , G11B2020/1823 , G11B2020/1826
摘要： A computer program product, according to one embodiment, includes a computer readable storage medium having program instructions embodied therewith. The computer readable storage medium is not a transitory signal per se. Moreover, the program instructions readable and/or executable by a processor to cause the processor to perform a method which includes: instructing, by the processor, a drive to detect a written signal burst on a magnetic tape; and searching, by the processor, a surface of the magnetic tape proximate to the written signal burst for a defect. A computer-implemented method, according to another embodiment, includes: moving a magnetic tape to an approximate location of a defect, detecting a written signal burst on the magnetic tape, and stopping movement of the magnetic tape in response to detecting the written signal burst. Other systems, methods, and computer program products are described in additional embodiments.

5. 发明申请

US20160098221A1 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：用于将写入磁带的数据同步的系统，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：US20160098221A1
公开(公告)日：2016-04-07
申请号：US14964942
申请日：2015-12-10
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 , G06F17/30
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。

6. 发明授权

US09235347B2 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：用于将写入磁带的数据同步的系统，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：US09235347B2
公开(公告)日：2016-01-12
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 , G06F12/00
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： 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：用于将写入磁带的数据同步改进的数据恢复的系统，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。

7. 发明申请

US20160005434A1 WRITING DATA TO A TAPE 审中-公开
标题翻译：将数据写入磁带
公开(公告)号：US20160005434A1
公开(公告)日：2016-01-07
申请号：US14442450
申请日：2013-01-30
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： Jonathan Peter Buckingham , Rafel Jibry
IPC分类号： G11B20/12 , G11B5/008
CPC分类号： G11B20/1202 , G11B5/00817 , G11B5/00821 , G11B20/1201 , G11B20/1886
摘要： A method of writing data to a tape on which during a write operation successive data unit groups that comprise a plurality N of data units are written across the tape as N track portions to form N data tracks that extend in a lengthways direction of the tape. The method includes identifying data units written during the write operation that need to be rewritten and writing a rewrite data unit group that contains data units identified as needing to be rewritten. The rewrite data unit group has N track portions written across the tape to form a part of the data tracks. The N track portions contain N-n data units identified as needing to be rewritten and data unit identifier information comprising respective data unit identifiers for the N-n data units contained in at least one list of data unit identifiers. N and n are positive integers.
摘要翻译：将写入数据的方法写入到其中在其中在写入操作期间的连续数据单元组中包含多个数据单元的数据单元被写入磁带作为N个磁道部分以形成在磁带的长度方向上延伸的N个数据磁道。该方法包括识别在写操作期间写入的需要重写的数据单元，并写入包含被识别为需要重写的数据单元的重写数据单元组。重写数据单元组具有跨磁带写入的N个磁道部分，以形成数据磁道的一部分。 N个磁道部分包含被识别为需要重写的N-n个数据单元，以及数据单元标识符信息，包括包含在至少一个数据单元标识符列表中的N-n个数据单元的相应数据单元标识符。 N和n是正整数。

8. 发明申请

US20130194904A1 WRITING SYSTEM, WRITING DEVICE, AND WRITING METHOD 有权
标题翻译：书写系统，书写工具和书写方法
公开(公告)号：US20130194904A1
公开(公告)日：2013-08-01
申请号：US13751308
申请日：2013-01-28
申请人： FUJITSU LIMITED
发明人： Yoshiaki OCHI
IPC分类号： G11B20/18
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。

9. 发明申请

US20190189155A1 DETECTING DAMAGED AREAS ON MAGNETIC TAPE MEDIA USING DIAGNOSTICS LOCATE 审中-公开
公开(公告)号：US20190189155A1
公开(公告)日：2019-06-20
申请号：US16269424
申请日：2019-02-06
申请人： International Business Machines Corporation
发明人： Noriko Yamamoto , Tsuyoshi Miyamura , Hiroshi Itagaki , Tohru Hasegawa , Sosuke Matsui , Shinsuke Mitsuma
IPC分类号： G11B20/18
CPC分类号： G11B20/182 , G11B5/5504 , G11B5/5513 , G11B5/584 , G11B20/1876 , G11B20/1886 , G11B27/36 , G11B2020/1823 , G11B2020/1826
摘要： A computer-implemented method for determining a damaged area of a magnetic tape loaded in a tape drive, according to one embodiment, includes: determining a first error location on a magnetic tape where a first error occurred in response to experiencing the first error. Moreover, the method includes determining one or more areas on the magnetic tape to be examined. The one or more areas are determined using a predetermined algorithm which incorporates the first error location. Independent of a read and/or write operation, relative motion is induced between a tape head and the magnetic tape such that the tape head is positioned adjacent to each of the respective one or more areas in turn. Furthermore, each of the one or more areas having a respective number of measured servo errors which exceeds a threshold value is identified as a damaged area of the magnetic tape.

10. 发明申请

US20170330594A1 TAPE APPARATUS AND CONTROL DEVICE 有权
公开(公告)号：US20170330594A1
公开(公告)日：2017-11-16
申请号：US15499015
申请日：2017-04-27
申请人： FUJITSU LIMITED
发明人： Nobuyuki Hirashima , Takashi Murayama , Takuya Kurihara , Takaaki Yamato , Katsuo Enohara , Naoki Hirabayashi
IPC分类号： G11B20/18 , G11B5/008 , G11B20/12 , G11B5/09
CPC分类号： G11B20/1886 , G11B5/00821 , G11B5/09 , G11B20/1202 , G11B2020/183 , G11B2020/1893
摘要： A tape apparatus includes a tape drive and a processor. The tape drive is configured to perform data reading and data writing on a magnetic tape in which a plurality of tracks are formed. The processor is configured to control the tape drive to perform data reading and data writing on the plurality of tracks in a first segment among a plurality of segments obtained by dividing the magnetic tape in a running direction. The processor is configured to reserve a first track of the plurality of tracks as a copy target upon determining that an abnormality occurs in the first segment on the first track. The processor is configured to instruct the tape drive to copy data recorded in the first segment on the first track to a second segment on the first track at a predetermined timing. The second segment is adjacent to the first segment.

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