System and method for efficient updates of sequential block storage
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United States of America Patent
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Feb 1, 2011
Grant Date -
Feb 5, 2009
app pub date -
Oct 30, 2007
filing date -
Apr 27, 2007
priority date (Note) -
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Abstract
An improved system and method enhances performance of updates to sequential block storage of a storage system. A disk-based sort procedure is provided to establish locality among updates (write data) held in a disk-based log, thereby enabling the write data to be efficiently written to home locations on a home location array. As the write data is received, a log manager of the storage system temporarily stores the data efficiently on the disk-based log. As more write data arrives, the log manager sorts the data in the log in accordance with the sort procedure, thus increasing the locality of data when stored on the home location array. When the log approaches capacity, the log manager writes the sorted data to their home locations on the array with high locality and performance.
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