Sunday, June 8, 2008

Five Nines

Five Nines of Uptime.

So as we sit thru multiple hours of downtime a discussion of uptime batted around.
Five Nines of Uptime would be 99.999%.
The nines before the decimal are counted.

In the case of Two Nines we should be down only 3.65 days out of 365 days for the year.
Five Nines would be an outage of 5.26 minutes.
So being down for an hour means we are at best Three Nines.

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