Accelerating garbage collection for 3D MLC flash memory with SLC blocks

Li, Shuai; Tong, Wei; Liu, Jingning; Wu, Bing; Feng, Yongdong

doi:10.1109/iccad45719.2019.8942097

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…Specifically, the new data are written to the SLC-mode blocks, and the buffered (cold) data will be later flushed onto TLCmode blocks if the SLC-mode buffer becomes full. Then, the hot write data will be kept in the SLC-mode buffer and the I/O performance can be consequently enhanced, without causing many capacity drops [15]. In order to flexibly manage the hybrid SSDs (e.g.…”

Section: Background and Related Workmentioning

confidence: 99%

“…Then, we argue that it is not necessary to initialize all SSD blocks or a major part of SSD blocks as the original high density cells, since they do not have good I/O performance [14]. Moreover, the SLCmode blocks of SSDs can be converted into the original high density blocks, when the blocks have been erased [15]. To balance I/O performance and space capacity in high density SSDs (TLC devices for example in the paper), we propose a space management scheme to support adaptive SLC/TLC block conversion.…”

Section: Introductionmentioning

confidence: 99%

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Adaptive one-way SLC/TLC mode conversion in high density SSDs

Zhao

Cai

Song

et al. 2021

IEICE Electron. Express

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This paper proposes an adaptive one-way SLC/TLC mode conversion, to balance the capacity and the I/O performance in the use of high density TLC SSDs. Considering the space demand of the early stage of SSD devices is limited and the total amount of valid data basically keeps increasing, we initialize all SSD cells work in the SLC-mode for yielding better I/O performance. Then, when the available capacity of high density SSDs is lower than the space demand of applications, certain SLC-mode cells will be converted into the TLC mode to increase available space of SSDs. To this end, we build a mathematical model to better guide one-way SLC/TLC mode conversions, that can help determining the time and the quantity of conversions from the SLC mode to the TLC mode.

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Section: Background and Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%