Disk array apparatus and physical disk restoration method
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United States of America Patent
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Apr 30, 2013
Grant Date -
Jan 27, 2011
app pub date -
Jul 21, 2010
filing date -
Jul 24, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
The invention provides a disk array apparatus and a physical disk restoration method for managing a used area and an unused area of a faulty physical disk and shortening the time required for the physical disk to become usable by an external unit. The disk array apparatus includes: a unit for determining whether block areas of the physical disk are used areas or unused areas; a unit for recovering data in relation to block areas determined to be used areas and writing the recovered data to block areas of a spare disk corresponding to the used areas; a unit for transmitting a notification that the physical disk is usable to a host apparatus when data recovery is completed; and a unit for writing zero data to block areas of the spare disk corresponding to block areas determined to be unused areas after transmitting the notification.
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