Method for storing metadata in a physical sector
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United States of America Patent
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Apr 12, 2005
Grant Date -
Oct 30, 2003
app pub date -
Apr 24, 2002
filing date -
Apr 24, 2002
priority date (Note) -
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Abstract
A method for embedding integrity metadata. In one exemplary embodiment, a plurality of integrity metadata segments is determined. Each integrity metadata segment is associated with a segment of user data. The user data is mapped to a plurality of physical sectors, each physical sector containing a segment of user data and the associated integrity metadata segment. For one exemplary embodiment, a common I/O data block size is determined, and its data is mapped into a number of 512-byte sectors. The number of 512-byte sectors corresponds to the number required for the common I/O data block size plus one or more additional 512-byte sectors. This creates additional space in each sector to accommodate the integrity metadata. Integrity metadata for each data segment of the common I/O size is determined. The integrity metadata for each sector is mapped to the additional space of each sector.
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