4 ms·
I've also seen people make the other mistake, though. I've had people screaming about 2 hours of downtime violating our 99.999% SLA, apparently not realizing th
by bandrami 10y ago
I've also seen people make the other mistake, though. I've had people screaming about 2 hours of downtime violating our 99.999% SLA, apparently not realizing the five nines means the thing can be down eight hours a year (an entire business day) and still be in spec.
- entropy_ 10y agoThat's not true. 5 nines, ie 99.999% uptime means that the maximum downtime in a year is about 315 seconds: 60x60x24x365 x (1 - (99.999/100)) = 315.36 Wikipedia confirms: https://en.wikipedia.org/wiki/High_availability#Percentage_calculation https://en.wikipedia.org/wiki/High_availability#Percentage_c... So yes, 2hrs of downtime would most definitely violate the SLA. The 8 hours you refer to is the figure for 3 nines.
- bandrami 10y agoD'oh. It was three nines, thanks