Zhou and Co-Authors Mix Cocktail to Address Read-Disturb Issues in NAND Flash Memory-Based Solid-State Devices
NAND flash memory is a type of non-volatile lightning-fast storage technology found in solid-state drives that does not require power to retain data. When in use, a large number of read-disturb-induced rewrites are performed in the background, also known as “read reclaim,” to alleviate the read-disturb issue with this type of technology. These rewrites can significantly degrade the performance and shorten the service life of solid-state devices in read-intensive workloads. To address this issue, TSYS School assistant professor of computer science Yi Zhou and his colleagues from Jinan University, Michigan Technological University and the University of Maine propose a novel read-disturb management approach referred to as “Cocktail” that outperforms three existing approaches in extending the service life of solid-state devices and improving solid-state device response times. Testing performed by Zhou and his colleagues for their study, which is set to appear in a future issue of IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, indicates that “Cocktail” improves solid-state device response times by 10.8 percent compared to existing approaches to dealing with the read-disturb issue.
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