Emulating a remote direct memory access (‘RDMA’) link between controllers in a storage array
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United States of America Patent
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Feb 13, 2018
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app pub date -
Aug 3, 2015
filing date -
Aug 3, 2015
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Abstract
Emulating a remote direct memory access (‘RDMA’) link between controllers in a storage array, including: inserting, into a buffer utilized by a direct memory access (‘DMA’) engine of a first storage array controller, a data transfer descriptor describing data stored in memory of the first storage array controller and a location to write the data to memory of the second storage array controller; retrieving, in dependence upon the data transfer descriptor, the data stored in memory of the first storage array controller; and writing the data into the memory of the second storage array controller in dependence upon the data transfer descriptor.
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