What is it about?
Sanitization is a time-consuming process that involves completely removing sensitive data from storage devices. Flash-based SSDs are widely used in many systems, but they lack an in-place update feature, which makes it difficult for LSM trees to maintain both privacy and performance on these devices.
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Why is it important?
This paper aims at resolving the data security for LSM-based keyvalue separating storage on 3D MLC NAND flash memories. The proposed ICP is used to write the new version value and sanitize out-of-date values simultaneously. The proposed hot-cold separation allocation policy focuses on improving space utilization by managing data with access patterns. As a result, updating data in the value region can achieve high sanitization efficiency and low management overhead. The results of our study demonstrate the effectiveness of the design in enhancing the security and efficiency of LSM-based storage on 3D MLC NAND flash memories.
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This page is a summary of: Efficient Sanitization Design for LSM-based Key-Value Store over 3D MLC NAND Flash, March 2023, ACM (Association for Computing Machinery),
DOI: 10.1145/3555776.3577780.
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