ABSTRACTS OF ARTICLES OF THE JOURNAL "INFORMATION TECHNOLOGIES".
No. 9. Vol. 24. 2018

DOI: 10.17587/it.24.586-593

A. V. Chernyshov, Ph. D., Associate Professor, sch@mgul.ac.ru Mytiscthi branch of Bauman Moscow State Technical University, Mytiscthi, Russian Federation

The Study of the Properties of Long-Term Electronic Archival Information Storage on Optical Disks Organized into a Structure of RAID-5

The problem is investigated of creating a local electronic archive information store for a small organization. Minimization of the cost of creating and maintaining archive is an important factor along with the reliability of information storage. Optical write-once disks organized in RAID-5 are proposed to be used for the purpose. A mathematical model of two alternatives such storages is constructed. It is proved that the best results in most cases are achieved when using the RAID-5 structure with backups of each disc. But with minimum size of storage (about 1 Tb) more profitable may be use single disks with three copy. It is shown that it is possible to increase the number of drives in the RAID-5 to reduce the unit cost of storing information with an acceptable decrease in reliability of storage.
Keywords: electronic archival storage of information, long-term storage, optical storage media, reliability of information storage, minimization of cost

P. 586–593

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