Reducing reconstruct input/output operations in storage systems
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United States of America Patent
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Jan 12, 2010
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app pub date -
Dec 6, 2006
filing date -
Dec 6, 2006
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Abstract
The present invention provides a system, method, and computer program product for partially pre-writing data stored in an array of mass storage devices to a spare disk dedicated to the array prior to detecting a failure in the array. The system then reconstructs data from the failed disk using data partially pre-written to the spare disk. Since some of the data has already been pre-written to the spare disk, embodiments of the present invention reduce the number of I/O operations performed by a storage system during a process of reconstructing data from the failed disk to the spare disk.
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