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SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT FOR SYNCHRONIZING DATA WRITTEN TO TAPE INCLUDING WRITING AN INDEX INTO A DATA PARTITION

  • US 20150127980A1
  • Filed: 01/07/2015
  • Published: 05/07/2015
  • Est. Priority Date: 06/25/2012
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a memory;

    at least one processor; and

    stored instructions translatable by the at least one processor to;

    when a tape is mounted on a drive, write an index from an index partition of the tape into the memory such that the memory stores an in-memory version of the index;

    after a predetermined amount of time has passed, after a predetermined condition has been met, or after a predetermined amount of data has been written to the tape, perform a synchronization operation to write the in-memory version of the index to a data partition of the tape such that the data partition of the tape stores a copy of the in-memory version of the index;

    when the tape is to be unmounted, perform an unmount operation to write the in-memory version of the index from the memory into the index partition of the tape;

    when the tape is to be mounted again, compare indexes most recently written to the index partition of the tape and to the data partition of the tape; and

    if the indexes do not match, automatically perform a recovery operation to update the index partition of the tape with the copy of the in-memory version of the index from the data partition of the tape.

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