Are you taking the iSCSI plunge?


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  • iSCSI performance is still misunderstood. Many of those who plan to implement iSCSI storage have concerns about performance, but still intend to go forward with iSCSI SANs. Some nonadopters would reconsider deploying an iSCSI SAN if they had documentation proving iSCSI performance was sufficient for their needs.

  • Early adopters validate that performance isn't an issue. Our quantitative research and qualitative interviews consistently confirm that iSCSI performance isn't an issue. Eighty-seven percent of early adopters were very satisfied or satisfied with iSCSI network performance, while 82% were very satisfied or satisfied with iSCSI application performance. Early adopters ranked network performance and application performance as the two highest attributes in overall customer satisfaction, hopefully helping to dispel the concerns of planned adopters and nonadopters.

  • Current iSCSI SANs are used mainly for Tier-1 and Tier-2 application primary storage. Fifty-eight percent of early adopters use iSCSI for their Tier-2 application primary storage, with 50% using iSCSI for their Tier-1 app primary storage, an indication that users are confident in the capabilities of their iSCSI SANs. Planned adopters are also principally interested in using iSCSI for Tier-2 application primary storage, but a significant percentage (36%) are planning to use

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  • iSCSI for Tier-1 primary application data. Early adopters and planned adopters currently use or expect to use iSCSI for a number of other apps, including secondary storage, digital archiving and disaster recovery.

  • iSCSI deployments are additive today, but the data indicates that iSCSI will replace FC SANs over the next three years. While the majority of early adopters have implemented iSCSI for separate SAN buildouts, this will change over the next three years. The majority of early iSCSI adopters who also have an FC SAN infrastructure plan on replacing FC SAN deployments over the next three years significantly or to some degree. This is a strong and clear indication that early adopters of iSCSI are gaining confidence in the technology and that it's proven its value over FC.

  • File-based content is the No. 1 application type for current and planned iSCSI SANs. Some 74% of early adopters are using their iSCSI storage for file-based content, followed by database (45%), email (44%) and collaboration (37%) applications. Planned adopters attached the same level of priority to these application types.

This was first published in February 2007

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