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99.9 % SLA: how much downtime it allows
A 99.9 % SLA allows 43 min 50 s of downtime per month.
- Per day
- 1 min 26 s
- Per week
- 10 min 5 s
- Per month
- 43 min 50 s
- Per quarter
- 2 h 11 min
- Per year
- 8 h 45 min
Comparison with other levels
| Availability | Per day | Per week | Per month | Per year |
|---|---|---|---|---|
| 99 % | 14 min 24 s | 1 h 40 min | 7 h 18 min | 3 d 15 h |
| 99.5 % | 7 min 12 s | 50 min 24 s | 3 h 39 min | 1 d 19 h |
| 99.9 % | 1 min 26 s | 10 min 5 s | 43 min 50 s | 8 h 45 min |
| 99.95 % | 43 s | 5 min 2 s | 21 min 55 s | 4 h 22 min |
| 99.99 % | 9 s | 1 min | 4 min 23 s | 52 min 36 s |
| 99.999 % | 1 s | 6 s | 26 s | 5 min 16 s |
Month = year / 12 (30.44 days). Total downtime each level allows, not counting scheduled maintenance.
Measure your real availability and prove it
We check your services every minute and each month generate the SLA report with availability, outages, their causes and excluded maintenance.