An evaluation of restoration time and the amount of backup data of data replication method for large-scale disasters

Hitoshi Kamei; Takaki Nakamura; Hiroaki Muraoka

doi:10.1541/ieejeiss.137.1516

An evaluation of restoration time and the amount of backup data of data replication method for large-scale disasters

Hitoshi Kamei, Takaki Nakamura, Hiroaki Muraoka

Broadband Engineering Division

Research output: Contribution to journal › Article › peer-review

Abstract

Data replication method reducing data restoration time is evaluated on backup server fault model assuming Great East Japan Earthquake. Use-case is to back up important data via network in preparation to large-scale disasters. When the number of backup servers increases, restoration time becomes short because of parallel restoration; therefore, the restored data can be accessed as soon as possible. However, the amount of backup data also increases. In this study, data replication methods are classified, and evaluation functions are created for each method. Restoration time is calculated by using the backup server fault model, and then balanced method is revealed.

Original language	English
Pages (from-to)	1516-1525
Number of pages	10
Journal	IEEJ Transactions on Electronics, Information and Systems
Volume	137
Issue number	11
DOIs	https://doi.org/10.1541/ieejeiss.137.1516
Publication status	Published - 2017

Keywords

Backup-restore
Erasure coding
Replication
Restoration time

ASJC Scopus subject areas

Electrical and Electronic Engineering

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AB - Data replication method reducing data restoration time is evaluated on backup server fault model assuming Great East Japan Earthquake. Use-case is to back up important data via network in preparation to large-scale disasters. When the number of backup servers increases, restoration time becomes short because of parallel restoration; therefore, the restored data can be accessed as soon as possible. However, the amount of backup data also increases. In this study, data replication methods are classified, and evaluation functions are created for each method. Restoration time is calculated by using the backup server fault model, and then balanced method is revealed.

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An evaluation of restoration time and the amount of backup data of data replication method for large-scale disasters

Abstract

Keywords

ASJC Scopus subject areas

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