Abstract
Data storage plays a critical role in today’s fast-growing data-intensive network services. iSCSI is a new standard that allows SCSI protocols to be carried out over IP networks. This paper introduces a software iSCSI implementation and proposes two mechanisms to improve the performance of the IP SAN. One is the appropriate algorithm to manage commands on the SCSI command queue, such as an elevator algorithm to prioritize commands, and algorithms to eliminate or concatenate SCSI commands. The other mechanism is the use of a cache algorithm on the iSCSI target server. We have implemented these optimized algorithms and tested the performance of the IP SAN. The results show that the optimized system’s throughput reaches 85MB/s, which consumes 90% of the total IP network bandwidth and greatly reduces the average response time. Our IP storage system shows improved performance compared with the current iSCSI implementation.
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References
Phillips, B.: Have storage area networks come of age? IEEE Computer 31(7), 10–12 (1998)
Satran, J., et al.: iSCSI standard (2003), http://www.ietf.org/internet-drafts/draft-ietf-ips-iscsi-20.pdf
Meth, K.Z.: iSCSI Initiator Design and Implementation Experience. In: 10th Goddard Conference on Mass Storage Systems and Technologies (2002), see http://romulus.gsfc.nasa.gov/msst/conf2002/toc.html
Palekar, A.: Design and Implementation of A Linux SCSI Target for Storage Area Networks. In: Proceedings of the 5th Annual Linux Showcase & Conference (2001)
Intel Corp: Intel iSCSI project (2001), http://sourceforge.net/projects/intel-iscsi
He, X., Yang, Q., Zhang, M.: A Caching Strategy to Improve iSCSI Performance. In: Proceedings of the 27th Annual IEEE Conference on Local Computer Networks (2002)
Hu, Y., Yang, Q.: DCD-disk caching disk: A New Approach for Boosting I/O Performance. In: Proc of 23rd Annual Intl. Symposium on Computer Architecture, ISCA 1996 (1996)
Hu, Y., Yang, Q., Nightingale, T.: RAPID-Cache –A Reliable and Inexpensive Write Cache for Disk I/O Systems. In: Proc. of the 5th International Symposium on High Performance Computer Architecture (HPCA-5), Orlando, Florida (1999)
Menon, J.: A Performance Comparison of RAID-5 and Log-Structured Arrays. In: Proc. Of 4th IEEE Int’l Symp. High Performance Distributed Computing (1995)
Tsinghua-Mass Storage Network System report,The department of computer science and technology, Tsinghua University (2002)
Intel Corporation (2003), http://www.iometer.org/
Gibson, G., Meter, R.: Network Attached Storage Architecture. Communications of the ACM 43 (2000)
Hernandez, R., Kion, C., Cole, G.: IP Storage Networking: IBM NAS and iSCSI Solutions, Redbooks Publications (IBM) (2001)
Huang, L., Chiueh, T.: Implementation of a rotation-latency-sensitive disk scheduler. SUNY at Stony Brook Technical Report (May 2000)
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Li, B., Shu, Jw., Zheng, W. (2004). Design and Optimization of an iSCSI System. In: Jin, H., Pan, Y., Xiao, N., Sun, J. (eds) Grid and Cooperative Computing - GCC 2004 Workshops. GCC 2004. Lecture Notes in Computer Science, vol 3252. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30207-0_33
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DOI: https://doi.org/10.1007/978-3-540-30207-0_33
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-23578-1
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