Definition of "nines" []

• Plural form of nine. (noun)
• A pair of nines. (noun)

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• "Five nines is a goal that many small to medium enterprises may not even be aware of, never mind achieve."
• "Five nines is too expensive for most free, consumer-oriented web services to maintain, and realizing that, we seem to be building out our store of redundant communications."
• "So, five nines is now five different communication services, each with one nine reliability …"