Tape data assessment through medium auxiliary memory data comparison
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United States of America Patent
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Dec 25, 2012
Grant Date -
Sep 1, 2011
app pub date -
Apr 16, 2010
filing date -
Apr 16, 2009
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods for certifying data retained by a tape cartridge in a tape library are shown. Error rates that are encountered when the tape cartridge is being read by a tape drive can be accounted for without actually reading data for data content retrieval. A record of the error rate can be stored in a medium auxiliary memory device associated with the tape cartridge. An older record containing a formerly accounted for error rate of read errors when the tape cartridge was formerly read can be accessed and compared with the record presently assessed. If there is a difference between the presently found error rate and the formerly found error rate an action can be executed if the difference exceeds a predetermined threshold.
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