What is Five Nines?
October 30th, 2007Only 5.26 minutes!
| Availability % | Downtime per year | Downtime per month* | Downtime per week |
|---|---|---|---|
| 90% | 36.5 days | 72 hours | 16.8 hours |
| 95% | 18.25 days | 36 hours | 8.4 hours |
| 98% | 7.30 days | 14.4 hours | 3.36 hours |
| 99% | 3.65 days | 7.20 hours | 1.68 hours |
| 99.5% | 1.83 days | 3.60 hours | 50.4 min |
| 99.8% | 17.52 hours | 86.23 min | 20.16 min |
| 99.9% | 8.76 hours | 43.2 min | 10.1 min |
| 99.95% | 4.38 hours | 21.56 min | 5.04 min |
| 99.99% | 52.6 min | 4.32 min | 1.01 min |
| 99.999% | 5.26 min | 25.9 s | 6.05 s |
| 99.9999% | 31.5 s | 2.59 s | 0.605 s |
References
http://en.wikipedia.org/wiki/5_nines