The Models for Planning the Number of Optical Disks Combined into RAIDs Needed to Set Up and Maintain Long-term Electronic Archives

  • Александр [Aleksandr] Викторович [V.] Чернышов [Chernyshov]
Keywords: long-term archives of electronic information, write once optical disks (WORM), optical disk RAIDs, maintaining the information integrity in a long-term archive

Abstract

The aim of the study is to build mathematical models for evaluating the performance parameters of long-term electronic archives set up on single-entry optical disks combined into RAIDs. In carrying out the study, the methods of combinatorics, probability theory, and higher mathematics were used. As a result of the study, analytical dependencies were obtained that allow one to estimate such archive parameters as the time (in years) during which the archive will be filled to its planned capacity, the number of media to be purchased annually (taking into account potentially defective ones) that are necessary both to fill the archive and to maintain its integrity, and the possibility in principle of achieving the planned archive capacity. The evaluation was performed for different RAID types and filling options, taking into account a large number of initial parameters. The results obtained may be useful for designers of long-term electronic archives to predict their properties, including determination of the necessary annual costs for setting up and operating them based on the estimated number of media purchased annually.

Information about author

Александр [Aleksandr] Викторович [V.] Чернышов [Chernyshov]

Ph.D. (Techn.), Assistant Professor of Applied Mathematics, Computer Science and Computer Engineering (K3) Dept., Mytishchi Branch of the Bauman Moscow State Technical University, e-mail: sch-ru@yandex.ru

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Для цитирования: Чернышов А.В. Модели планирования количества оптических дисков, объединяемых в массивы RAID, необходимых для создания и поддержания долговременных электронных архивов // Вестник МЭИ. 2023. № 6. С. 126—134. DOI: 10.24160/1993-6982-2023-6-126-134
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For citation: Chernyshov A.V. The Models for Planning the Number of Optical Disks Combined into RAIDs Needed to Set up and Maintain Long-term Electronic Archives. Bulletin of MPEI. 2023;6:126—134. (in Russian). DOI: 10.24160/1993-6982-2023-6-126-134
Published
2023-09-05
Section
Computing systems and their elements (technical sciences) (2.3.2.)