3 ms·
It's a common way to describe uptime. It means 99.99% uptime/availability, which works out to under 1 hour of downtime per year. http://en.wikipedia.org/wiki/N
by tangothedog 15y ago
It's a common way to describe uptime. It means 99.99% uptime/availability, which works out to under 1 hour of downtime per year.
http://en.wikipedia.org/wiki/Nines_(engineering) http://en.wikipedia.org/wiki/Nines_(engineering)