NDLI: Performance improvement of iSCSI remote storage access

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Performance improvement of iSCSI remote storage access

Content Provider	ACM Digital Library
Author	Higa, Reika Okamawari, Takao Matsubara, Kosuke Oguchi, Masato Yamaguchi, Saneyasu
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.
Starting Page	1
Ending Page	7
Page Count	7
File Format	PDF
ISBN	9781605588933
DOI	10.1145/2108616.2108675
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2010-01-14
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Tcp San Rtt Iscsi Ip
Content Type	Text
Resource Type	Article

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