Auto-Tuning Parameters for Emerging Multi-Stream Flash-Based Storage Drives Through New I/O Pattern Generations

Bhimani, Janki; Maruf, Adnan; Mi, Ningfang; Pandurangan, Rajinikanth; Balakrishnan, Vijay

doi:10.1109/tc.2020.3048303

Cited by 6 publications

(1 citation statement)

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“…1, the over-provisioning area is proportional to the performance of the storage device. Recently, researchers have created a technique to vary the over-provisioning area according to the workload in the data storage system [11,12] by adjusting the physical space to maintain optimal performance depending on the workload. For example, the size of the over-provisioning area depends on the category of the workload [13].…”

Section: A Over-provisioningmentioning

confidence: 99%

Forensic Issues and Techniques to Improve Security in SSD With Flex Capacity Feature

Ahn¹,

Lee

2021

IEEE Access

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Over-provisioning technology is typically introduced as a means to improve the performance of storage systems, such as databases. The over-provisioning area is both hidden and difficult for normal users to access. This paper focuses on attack models for such hidden areas. Malicious hackers use advanced over-provisioning techniques that vary capacity according to workload, and as such, our focus is on attack models that use variable over-provisioning technology. According to these attack models, it is possible to scan for invalid blocks containing original data or malware code that is hidden in the over-provisioning area. In this paper, we outline the different forensic processes performed for each memory cell type of the overprovisioning area and disclose security enhancement techniques that increase immunity to these attack models. This leads to a discussion of forensic possibilities and countermeasures for SSDs that can change the over-provisioning area. We also present information-hiding attacks and information-exposing attacks on the invalidation area of the SSD. Our research provides a good foundation upon which the performance and security of SSD-based databases can be further improved.

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Section: A Over-provisioningmentioning

confidence: 99%