Method of managing, writing, and reading file on tape
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United States of America Patent
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Aug 1, 2017
Issued Date -
N/A
app pub date -
May 22, 2015
filing date -
Jul 11, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Managing a file on a tape. In response to a request to write a first file to a tape, whether a second file including data identical to the first file already exists on the tape is detected. If the second file exists, a first index of the second file is updated. After completing the write of the first file, metadata, including data starting position and size of the first file, is added to the first index. In response to a request to read the first or second files, the metadata of the first and second indexes are read. Based on the metadata, which of the first or second files can be accessed faster from a current head position is determined. The first file or the second file that can be accessed faster is then read from the tape.
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