Rebuttal to “Beyond MTTDL: A Closed-Form RAID-6 Reliability Equation”

A recent article on the reliability of RAID-6 storage systems overlooks certain relevant prior work published in the past 20 years and concludes that the widely used mean time to data loss (MTTDL) metric does not provide accurate results. In this note, we refute this position by invoking uncited rel...

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Bibliographic Details
Published in:ACM transactions on storage 2015-03, Vol.11 (2), p.1-10
Main Authors: Iliadis, Ilias, Venkatesan, Vinodh
Format: Article
Language:English
Subjects:
Data loss
Exact solutions
Mathematical analysis
Storage systems
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Summary:A recent article on the reliability of RAID-6 storage systems overlooks certain relevant prior work published in the past 20 years and concludes that the widely used mean time to data loss (MTTDL) metric does not provide accurate results. In this note, we refute this position by invoking uncited relevant prior work and demonstrating that the MTTDL remains a useful metric.
ISSN:1553-3077
1553-3093
DOI:10.1145/2700311