System and method for utilization of a shadow data buffer in a host where the shadow data buffer is controlled by external storage controller
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United States of America Patent
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Jan 30, 2018
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N/A
app pub date -
Oct 28, 2015
filing date -
Oct 28, 2015
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Abstract
Systems and methods for managing transfer of data into and out of a host data buffer of a host are disclosed. In one implementation, a partial write completion module of a storage system retrieves from the host, stores in a memory, and acknowledges retrieving and storing with a partial write completion message, each subset of a larger set of data associated with a host write command. The host may utilize received partial write completion messages to release and use the portion of the host data buffer that had been storing the subset identified in the message rather than waiting to release data associated with the host write command until all the data associated with the command is stored in the memory. The memory in which each subset is stored may be non-volatile memory in the storage device or a shadow buffer on the host or an external memory device.
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