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BUFFER-AWARE GARBAGE COLLECTION TECHNIQUE FOR NAND FLASH MEMORY-BASED STORAGE SYSTEMS
BUFFER-AWARE GARBAGE COLLECTION TECHNIQUE FOR NAND FLASH MEMORY-BASED STORAGE SYSTEMS
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机译:基于NAND闪存的存储系统的缓冲区感知垃圾收集技术
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摘要
PURPOSE: A garbage collection technique considering buffer is provided to reduce additional reading and writing occurred during garbage collection. CONSTITUTION: In case a storage device based on NAND flash memory is used and a buffer cache(600) exists within a host system or a storage unit, FTL(Flash Translation Layer) performs a garbage collection referring to data in the buffer cache. The replacement object log block is selected in the garbage collection in consideration of the content of the buffer cache. The garbage collection operates in the block merge in consideration of the buffer content.
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