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Paper Abstract and Keywords
Presentation 2013-03-08 15:10
Method of Finding Protected Data Centers to Keep Loads of Servers and Links Low during Server Failures
Keishi Ogura, Hiroyoshi Miwa (Kwansei Gakuin Univ.) NS2012-271
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, cloud computing technology has been developed and cloud
computing services becomes widespread. In a cloud computing service,
as users access to servers in data centers and use services, the
reliability of data centers are important. If a server in a data
center fails, the service stops or the load of backup servers may
increase very much, which degrade the quality of service. It is
desirable that all servers in all data centers have their backup
servers, but it needs much cost; therefore, it is necessary to
determine critical data centers that the failure of the servers in the
data centers degrade the performance considerably and to protect them
by backup facility. In this paper, we address a problem to determine
protected data centers such that, even if the non-protected data
centers fail, the access concentration to the remaining data centers
are limited and the traffic in a link are also limited. First, we
formulate this problem and prove its NP-completeness. Furthermore, we
design a heuristic algororithm and show by numerical experiments that
the proposed algorithm works well in actual network topologies.
Keyword (in Japanese) (See Japanese page) 
(in English) cloud computing / data center / NP-completeness / Optimization / Algorithm / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 463, NS2012-271, pp. 617-622, March 2013.
Paper # NS2012-271 
Date of Issue 2013-02-28 (NS) 
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 NS2012-271

Conference Information
Committee NS IN  
Conference Date 2013-03-07 - 2013-03-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Zanpamisaki Royal Hotel 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To NS 
Conference Code 2013-03-NS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Method of Finding Protected Data Centers to Keep Loads of Servers and Links Low during Server Failures 
Sub Title (in English)  
Keyword(1) cloud computing  
Keyword(2) data center  
Keyword(3) NP-completeness  
Keyword(4) Optimization  
Keyword(5) Algorithm  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Keishi Ogura  
1st Author's Affiliation Kwansei Gakuin University (Kwansei Gakuin Univ.)
2nd Author's Name Hiroyoshi Miwa  
2nd Author's Affiliation Kwansei Gakuin University (Kwansei Gakuin Univ.)
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Speaker Author-1 
Date Time 2013-03-08 15:10:00 
Presentation Time 20 minutes 
Registration for NS 
Paper # NS2012-271 
Volume (vol) vol.112 
Number (no) no.463 
Page pp.617-622 
#Pages 6 
Date of Issue 2013-02-28 (NS) 

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