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5 nines

See five nines.

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.

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Before/After Your Search Term
4S5-pin to 11-pin adapter
4th generation language5.1 channel
4U5.25 inch
4x CD-ROM50 GbE
4x DVD50 Gigabit Ethernet
4xAGP50-pin Telco connector
5-4-3 rule500 error
5 ATM50GbE
5 GHz50GE
5 GHz band50x CD-ROM

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