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High-speed file replication from tape using chunk grouping

A file and tape technology, used in tape-like record carriers, linear tape open format, magnetic recording, etc., can solve the problems of increased head relocation and inefficient file access, and achieve the effect of improving performance and reducing the amount of computing resources.

Pending Publication Date: 2022-04-01
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, accessing files in this manner is often inefficient due to the repetitive moves performed to seek the beginning of each file on the tape

Method used

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  • High-speed file replication from tape using chunk grouping
  • High-speed file replication from tape using chunk grouping
  • High-speed file replication from tape using chunk grouping

Examples

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Embodiment Construction

[0035] The following description is made to illustrate the general principles of the invention and is not meant to limit the inventive concepts claimed herein. Further, certain features described herein can be used in combination with other described features in each of the different possible combinations and permutations.

[0036] Unless otherwise specifically defined herein, all terms are to be given their broadest possible interpretations, including meanings implied from the specification as well as meanings understood by those skilled in the art and / or as defined in dictionaries, treatises, etc. .

[0037]It must also be noted that, as used in the specification and the appended claims, the singular forms "a", "an" and "the" include plural referents unless stated otherwise.

[0038] The following description discloses several preferred methods of a magnetic storage system, and operations and / or component parts thereof for accessing (eg, reading) multiple files from magneti...

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Abstract

According to one aspect, a computer-implemented method includes receiving a request to read a plurality of files from a tape, and obtaining a tape directory identifying an area on the tape that stores the files. The tape directory is used to map each file to one of the regions on the tape where the respective file is stored. A first subset of files stored in the same first region on the tape is also ordered in a first order. The computer-implemented method also includes concurrently ordering a second subset of files stored in the same second region on the tape in a second order, and instructing the tape drive to read each file in the first subset according to the first order.

Description

technical field [0001] The present invention relates to data storage systems, and more particularly, the present invention relates to accessing files stored on magnetic tape using block groups. Background technique [0002] In a magnetic storage system, a magnetic transducer reads data from and writes data to a magnetic recording medium. Data is written to a magnetic recording medium by moving a magnetic recording transducer to a location over the medium where the data is to be stored. A magnetic recording transducer then generates a magnetic field that encodes data into the magnetic media. Data is read from the media by similarly positioning a magnetic read transducer and then sensing the magnetic field of the magnetic media. Read and write operations can be independently synchronized with the movement of the media to ensure that data can be read from and written to desired locations on the media. [0003] An important and ongoing goal in the data storage industry is to ...

Claims

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Application Information

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IPC IPC(8): G11B15/00G11B5/55G06F3/06
CPCG11B5/00817G11B5/02G06F3/0682G06F3/064G06F3/061G06F3/0643G11B5/5508G11B27/107G11B2220/956
Inventor 宫村刚志长谷川彻山本纪子三间慎介松井壮介板垣浩
Owner IBM CORP
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