Uptime what does it really mean?
When someone claims five 9’s of availibilty what does that really mean?
Translating the Metrics
| Availability | Downtime Per Year |
| Text Here | Text Here |
| 99.9999% | 32 seconds |
| 99.999% | 5 minutes, 15 seconds |
| 99.99% | 52 minutes, 36 seconds |
| 99.95% | 4 Hours, 23 minutes |
| 99.9% | 8 Hours, 46 minutes |
| 99.5% | 1 day, 19 hours, 48 minutes |
| 99% | 3 days, 15 hours, 40 minutes |
Formula = (3651/4 x 24)
As you can see It would take a lot to get five 9’s of availibilty. Most of all it requires no single point of failure and that includes physical locations.