Performance improvement of iSCSI remote storage access
Authors: 
Masato Oguchi, Reika Higa, Kosuke Matsubara, Takao Okamawari, Saneyasu YamaguchiAuthors Info & Claims
Masato Oguchi, Reika Higa, Kosuke Matsubara, Takao Okamawari, Saneyasu YamaguchiAuthors Info & ClaimsArticle No.: 48, Pages 1 - 7
Abstract
iSCSI is one of the most popular protocols among the storage area network (SAN) working on an IP network. iSCSI is a standard to encapsulate a SCSI command into a TCP/IP packet, thus we can make an access to a storage system with commoditized IP devices only. In this paper, iSCSI sequential write access for a remote backup system is focused. It is well known that iSCSI experiences performance degradation under a high latency environment. The storage access by iSCSI has multiple hierarchical protocols. Due to this complicated structure, it is very difficult to identify the performance bottleneck that causes the degradation. Therefore, system tools which can analyze the complicated layered structure are required. We have developed system tools that enable us to monitor the hierarchical protocols. As a result, we have identified the cause of the iSCSI performance degradation problem. We then fixed the problem and confirmed that one can obtain the performance close to the theoretical limit.
References
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Satran, J. et al.: Internet Small Computer Systems Interface (iSCSI), IETF RFC 3720, http://www.ietf.org/rfc/rfc3720.txt, (2004)
[2]
Toyoda, M., Yamaguchi, S. and Oguchi, M.: TCP congestion window controll on an iSCSI read access in a long latency environment, Proc. 16th IASTED International Conference on Communication Systemd and Applications (CSA 2005), pp. 170--175, (2005).
[3]
Higa, R., Matsubara, K., Okamawari, T., Yamaguchi, S. and Oguchi, M.: Optimization of iSCSI Remote Storage Access through Multiple Layers, The 3rd International Workshop on Telecommunication Networking, Applications and Systems (TeNAS'2009) in conjunction with The IEEE 23rd International Conference on Advanced Information Networking and Applications (AINA-09), pp.612--617, (2009).
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Shastry, Y., Klotz, S. and Russell R.: Evaluating the effect of iSCSI protocol parameters on performance, IASTED International conference on Parallel and Distributed Computing and Networks (PDCS 2005), Innsbruck, Austria, pp. 15--17 (2005).
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The iSCSI Enterprise Target project, http://iscsitarget.sourceforge.net
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Iperf, http://dast.nlanr.net/Projects/Iperf/
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- Performance improvement of iSCSI remote storage access
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Published In
January 2010
550 pages
ISBN:9781605588933
DOI:10.1145/2108616
- Conference Chairs:
- Kwan-Ho You,
- Sang-Won Lee,
- General Chairs:
- Won Kim,
- Dongho Won
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Published: 14 January 2010
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ICUIMC '10
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ICUIMC '10: The 4th International Conference on Ubiquitous Information Management and Communication
January 14 - 15, 2010
Suwon, Republic of Korea
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