five nines


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five nines

Refers to 99.999% uptime that many network providers are fond of stating as the reliability of their networks. Whether five nines is truly what is delivered at all times may be debatable, because that means no more than 26 seconds of downtime per month. In any event, five nines means that everything in the datacenter is fully redundant, including AC power, air conditioning, network equipment and computer hardware.

From One Nine to Nine Nines
Nines ratings range from a maximum of 72 hours of downtime per month (one nine) to no more than 2.6 milliseconds per month (nine nines). See failover and redundancy.
References in periodicals archive ?
From its two locations in Lincoln and Omaha, Nebraska, and with its 25-person team, Five Nines co-founders Nick Bock and James Bowen boldly leverage IT resources to make sure its corporate name translates to reality to their clients.
Brocade expects to offer the industry's first end-to-end 16 Gbps FC product portfolio in the first half of 2011, delivering unmatched simplicity in managing data-intensive applications, investment protection for existing SAN infrastructure and non-stop networking with field-proven "five nines" availability.
(Nothing is going to be up four or five nines any more).
By deploying the RNC 9000 on a NEBS-compliant ATCA platform, Airvana can offer its customers high capacity, as well as redundancy, five nines reliability and cost-effective operations and management, the company said.
Nines in honor of Majed Abdullah, now in his later forties.'Mobily, the official and exclusive sponsor for the Majed Abdullah festival, presented the outgoing soccer star with 99,999 free minutes, a vanity number featuring five nines and variety of gifts presented Sunday night.During the festival, the Spanish side Real Madrid will play against Majed Abdullah's home team, the Riyadh-based Al Nasr Club.