Storage device, and control method and recording medium thereof
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United States of America Patent
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Nov 29, 2022
Grant Date -
N/A
app pub date -
Mar 24, 2021
filing date -
Sep 28, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
The memory system comprises nonvolatile memory devices each including plural superblocks and a controller. The controller is configured to select a victim superblock including a smaller number of valid pages than any among remaining superblocks, exchange a greater-valid-pages block with a smaller-valid-pages block, and control the memory device to perform a garbage collection operation on the victim superblock, wherein the greater-valid-pages block is included in the victim superblock and the smaller-valid-pages block is included in one among the remaining superblocks, and wherein the smaller-valid-pages block has a smaller number of valid pages than the greater-valid-pages block.
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