System and method for reducing unrecoverable media errors
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United States of America Patent
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Feb 9, 2010
Grant Date -
N/A
app pub date -
May 22, 2008
filing date -
Apr 24, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A data storage system has a network adapter to receive an I/O request. A status signal is generated in response to the I/O request, the status signal indicating a failure of a storage media to which the I/O request was directed. An operating system determines, in response to the status signal, if the storage media is in a degraded mode. If the storage media is in a degraded mode, the operating system stores the I/O operation in a log for execution at a later date. If the storage media is not in a degraded mode, the operating system reassigns the I/O request to a spare storage media. The operating system places an appropriate entry of a faulty media onto a defect list that maps to a spares pool to aid reassignment of subsequent I/O requests.
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