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| Presentation | 2016-06-10 09:25 Evaluation of Number of Data Replicas for Urban-area Distributed Storage System Using Hazard Map Information Takaki Nakamura (Tohoku Univ.), Satoshi Munakata, Kunio Saito, Jyunko Miyazaki (HSEJ), Shinya Matsumoto, Hitoshi Kamei (Hitachi), Hiroaki Muraoka (Tohoku Univ.)  MR2016-8 Link to ES Tech. Rep. Archives: MR2016-8 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We have proposed the urban-area distributed storage system and the risk-aware data replication to sustain information services in areas affected by a wide-spread disaster. The risk-aware data replication decides a safe backup server for a primary server using integer programming problem based on the damage risk between both the primary server and the backup server. As the number of data replicas increases, the problem size grows and the cost for storages to store replicas increases. Therefore, it remains challenges to decide an appropriate backup server in a short computation time and reduce the cost. In this paper, we propose the method that decides a backup server iteratively based on the average number of replicas specified by system administrators. We set a disaster model based on a hazard map information provided by J-SHIS, then we evaluate survived data ratios after a simulated disaster. We confirmed 94% survived data as the expected value when half the number of 24 servers with 1.5 replicas on average are damaged. We conclude that 1.5 replicas on average is appropriate to meet our target of over 90% survived data. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Availability / Wide-area Disaster / Risk-aware Data Replication / Urban-area Distributed Storage System / J-SHIS / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 116, June 2016. | |
| Paper # | ||
| Date of Issue | 2016-06-02 (MR) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | MR2016-8 Link to ES Tech. Rep. Archives: MR2016-8 |
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| Conference Information | |
| Committee | MRIS ITE-MMS |
| Conference Date | 2016-06-09 - 2016-06-10 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Recording Systems, etc. |
| Paper Information | |
| Registration To | MRIS |
| Conference Code | 2016-06-MR-MMS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of Number of Data Replicas for Urban-area Distributed Storage System Using Hazard Map Information |
| Sub Title (in English) | |
| Keyword(1) | Availability |
| Keyword(2) | Wide-area Disaster |
| Keyword(3) | Risk-aware Data Replication |
| Keyword(4) | Urban-area Distributed Storage System |
| Keyword(5) | J-SHIS |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Takaki Nakamura |
| 1st Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Satoshi Munakata |
| 2nd Author's Affiliation | Hitachi Solutions East Japan (HSEJ) |
| 3rd Author's Name | Kunio Saito |
| 3rd Author's Affiliation | Hitachi Solutions East Japan (HSEJ) |
| 4th Author's Name | Jyunko Miyazaki |
| 4th Author's Affiliation | Hitachi Solutions East Japan (HSEJ) |
| 5th Author's Name | Shinya Matsumoto |
| 5th Author's Affiliation | Hitachi, Ltd. (Hitachi) |
| 6th Author's Name | Hitoshi Kamei |
| 6th Author's Affiliation | Hitachi, Ltd. (Hitachi) |
| 7th Author's Name | Hiroaki Muraoka |
| 7th Author's Affiliation | Tohoku University (Tohoku Univ.) |
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| Speaker | Author-1 |
| Date Time | 2016-06-10 09:25:00 |
| Presentation Time | 25 minutes |
| Registration for | MRIS |
| Paper # | MR2016-8 |
| Volume (vol) | vol.116 |
| Number (no) | no.83 |
| Page | pp.53-58 |
| #Pages | 6 |
| Date of Issue | 2016-06-02 (MR) |
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