Qisi Liu
Department of Electrical and Computer Engineering, University of Massachusetts, Dartmouth, MA, USA.

Liudong Xing
Department of Electrical and Computer Engineering, University of Massachusetts, Dartmouth, MA, USA.

DOI https://doi.org/10.33889/IJMEMS.2021.6.1.003

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Abstract

In this paper we model and analyze survivability and vulnerability of a cloud RAID (Redundant Array of Independent Disks) storage system subject to disk faults and cyber-attacks. The cloud RAID survivability is concerned with the system’s ability to function correctly even under the circumstance of hazardous behaviors including disk failures and malicious attacks. The cloud RAID invulnerability is concerned with the system’s ability to function correctly while occupying some state immune to malicious attacks. A continuous-time Markov chains-based method is suggested to perform the disk level survivability and invulnerability analysis. Combinatorial methods are then presented for the cloud RAID system level analysis, which can accommodate both homogeneous (based on binomial coefficients) and heterogeneous (based on multi-valued decision diagrams) disks. A detailed case study on a cloud RAID 5 system is conducted to illustrate the application of the proposed methods. Impacts of different parameters on the disk and system survivability and invulnerability are also investigated through numerical analysis.

Keywords- Cloud storage system, Cyberattack, Disk fault, Survivability, Vulnerability.

Citation

Liu, Q., & Xing, L. (2021). Survivability and Vulnerability Analysis of Cloud RAID Systems under Disk Faults and Attacks. International Journal of Mathematical, Engineering and Management Sciences, 6(1), 15-29. https://doi.org/10.33889/IJMEMS.2021.6.1.003.