Data storage controller and method for exposing information stored in a data storage controller to a host system
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United States of America Patent
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Apr 28, 2015
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N/A
app pub date -
Dec 11, 2013
filing date -
Aug 20, 2013
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Abstract
A data storage controller exposes information stored in a locally managed volatile memory store to a host system. The locally managed volatile memory store is mapped to a corresponding portion of a peripheral component interconnect express (PCIe) compliant memory space managed by the host system. Backup logic in the data storage controller responds to a power event detected at the interface between the data storage controller and the host system by copying the contents of the volatile memory store to a non-volatile memory store on the data storage controller. Restore logic restores a data storage controller state by copying the contents of the non-volatile memory store to the locally managed volatile memory store upon the application of power such that the data in the volatile memory store is persistent even in the event of a loss of power to the host system and or the data storage controller.
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