Method, system, and data structures for using metadata in updating data in a storage device
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United States of America Patent
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Aug 9, 2005
Grant Date -
N/A
app pub date -
Aug 1, 2000
filing date -
Aug 1, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a method, system, and data structures for updating data in a storage device. An update to one or more blocks of customer data at addresses in the storage device is received. For each block of data to update, metadata is generated indicating the address of the block in the storage device and an error checking code that is capable of being used to determine whether the customer data in the block has changed. For each block of data to update, the block of data to update and the metadata for the block are written to cache. Further, for each block of data to update, the block of data and the metadata are transferred for the block from the cache to the storage device. The metadata may be used during power loss and recovery.
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