Fast locate using imitation reads on tape drives

A computer-implemented method, according to one embodiment, includes: receiving a read request for data stored on a magnetic tape, determining whether a copy of a portion of the requested data is located in a cache, instructing a tape drive to access portions of the requested data determined to not...

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Bibliographic Details
Main Authors Atsushi Abe, Setsuko Masuda
Format Patent
LanguageEnglish
Published 26.08.2020
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A computer-implemented method, according to one embodiment, includes: receiving a read request for data stored on a magnetic tape, determining whether a copy of a portion of the requested data is located in a cache, instructing a tape drive to access portions of the requested data determined to not be located in the cache, for each of the portions of the requested data that are not located in the cache, determine whether performing a locate command or performing a read command a plurality of times will retrieve the portions of the requested data in a shorter amount of time, issuing the command determined to retrieve the portions of the requested data in the shorter amount of time, combining the portions of the requested data that are not located in the cache with the portion of the requested data located in the cache, and satisfying the read request.
Bibliography:Application Number: GB20200006958