Storage utilization to improve reliability using impending failure triggers
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United States of America Patent
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Feb 28, 2012
Grant Date -
Mar 18, 2010
app pub date -
Sep 16, 2008
filing date -
Sep 16, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is a method of improving storage reliability comprising receiving an indicator of an impending failure of a first storage device in a RAID group. In response to the indicator, writing data to the first storage device is ceased. A first block of data directed to be written on the first storage device is written to a memory device. Data stored on the first storage device is copied to a second storage device. The first block of data is copied from the memory device to the second storage device. The RAID group is operated with the second storage device functioning in place of the first storage device. Data is read from said second storage device.
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