System and Method for Distributed Logical to Physical Address Mapping
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United States of America Patent
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Apr 19, 2017
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Dec 21, 2016
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Abstract
In a storage device having a storage controller and multiple memory channels, each memory channel has a memory channel controller. The storage controller, in response to a host command to perform a respective read operation at a logical address specified by the host command, identifies the memory channel based on the specified logical address, and also identifies a portion of logical to physical address mapping information corresponding to the logical address. The storage controller sends to a controller of the identified memory channel a read command that includes information identifying the portion of logical to physical address mapping information corresponding to the logical address. Using that information, the memory channel controller translates the logical address into a physical address and reads data from the physical address.
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