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Quality Awards: Top NAS products

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NAS goes head-to-head
We also examined head-to-head rankings when respondents owned systems from more than one vendor. Here, NetApp midrange products came out the highest, winning 20 of 34 head-to-head contests. EMC's Celerra NS series also did very well in this regard, scoring higher than other vendor's products in 17 out of 29 cases. NetApp's enterprise products ranked higher in 24 out of 47 cases. The biggest surprise was that HDS won only six of its 14 head-to-head matchups.

ABOUT THE SURVEY: The Diogenes Labs–Storage magazine Quality Award for NAS is the fifth in our series of survey-based service and reliability

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awards. The Quality Awards are designed to identify and recognize products that have proven their quality and reliability in actual use. The results are derived from a survey of qualified Storage readers that assesses products in five main categories: sales competence, product features, initial quality, product reliability and technical support. Our methodology incorporates statistically valid polling that eliminates market share as a factor. Indeed, our objective is to identify the most reliable products on the market regardless of vendor name, reputation or size. Products were rated on a scale from 1.0 to 8.0, where 8.0 is the most favorable possible score.

Clearly, head-to-head comparisons didn't track to the finish order of this survey. The reason, we believe, is that the comparisons involve all of the survey's competitors, including those with too few responses to be considered for the award. For example, products from BlueArc Corp. and Isilon Systems Inc. were rated very highly, but because of an insufficient number of responses neither was a finalist. However, statistical relevance isn't important for the head-to-head comparisons because it's a comparison of two systems by a single respondent who uses both products, and therefore doesn't rely on statistical calculations.

This was first published in May 2006

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