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Paper Abstract and Keywords
Presentation 2015-06-09 11:10
A design method of irregular flat XOR codes reducing repair bandwidth in distributed storage systems
Yui Yoshida, Yoshihide Tonomura, Takayuki Nakachi, Daisuke Shirai, Tatsuya Fujii (NTT) SIS2015-12
Abstract (in Japanese) (See Japanese page) 
(in English) To ensure the reliability of distributed storage systems, multi-disk fault tolerant erasure codes have been studied. A flat XOR code is one of the sparse graph codes designed for distributed storage systems. It encodes and decodes data by exclusive OR (XOR) operation with low complexity. However, conventional constructions of flat XOR codes are not optimal in terms of repair bandwidth. In this paper, we propose novel constructions of irregular flat XOR codes for a wide range of code lengths that reduce repair bandwidth and complexity. Our irregular flat XOR codes can remarkably reduce repair bandwidth and computational complexity compared to conventional flat XOR, RS codes and the codes designed by the Monte-Carlo method.
Keyword (in Japanese) (See Japanese page) 
(in English) Distributed Storage / Erasure Codes / Sparse Codes / Flat XOR Codes / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 75, SIS2015-12, pp. 63-68, June 2015.
Paper # SIS2015-12 
Date of Issue 2015-06-01 (SIS) 
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 SIS2015-12

Conference Information
Committee SIS  
Conference Date 2015-06-08 - 2015-06-09 
Place (in Japanese) (See Japanese page) 
Place (in English) Arkas SASEBO 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Smart Personal Systems, etc. 
Paper Information
Registration To SIS 
Conference Code 2015-06-SIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A design method of irregular flat XOR codes reducing repair bandwidth in distributed storage systems 
Sub Title (in English)  
Keyword(1) Distributed Storage  
Keyword(2) Erasure Codes  
Keyword(3) Sparse Codes  
Keyword(4) Flat XOR Codes  
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1st Author's Name Yui Yoshida  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Yoshihide Tonomura  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Takayuki Nakachi  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
4th Author's Name Daisuke Shirai  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
5th Author's Name Tatsuya Fujii  
5th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Speaker Author-1 
Date Time 2015-06-09 11:10:00 
Presentation Time 20 minutes 
Registration for SIS 
Paper # SIS2015-12 
Volume (vol) vol.115 
Number (no) no.75 
Page pp.63-68 
#Pages 6 
Date of Issue 2015-06-01 (SIS) 

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