Integrated-circuit implementation of a storage-shelf router and a path controller card for combined use in high-availability mass-storage-device shelves and that support virtual disk formatting
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United States of America Patent
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Aug 23, 2011
Grant Date -
Mar 11, 2010
app pub date -
Nov 12, 2009
filing date -
Jan 13, 2003
priority date (Note) -
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Abstract
One embodiment of the present invention is a virtual disk formatting system includes a mass-storage device having physical sectors that each contains a data payload of a first data length and additional information, including one or more of a sector number, error-detection, and error-correction information and a virtual disk interface to the mass-storage device, implemented in an integrated circuit, that maps access operations, received from external entities by the virtual disk interface, directed to a virtual disk having virtual sectors containing a data payload of a second data length by contiguously mapping an array of virtual-sector data payloads to a contiguous array of physical-sector data payloads without introducing padding data into physical-sector data payloads or into virtual-sector data payloads to align the initial bytes of virtual sectors and physical sectors.
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