| Availability level |
Allowed unavailability window |
|
|
|
|
|
|
per year |
per quarter |
per month |
per week |
per day |
per hour |
| 90% |
36.5 days |
9 days |
3 days |
16.8 hours |
2.4 hours |
6 minutes |
| 95% |
18.25 days |
4.5 days |
1.5 days |
8.4 hours |
1.2 hours |
3 minutes |
| 99% |
3.65 days |
21.6 hours |
7.2 hours |
1.68 hours |
14.4 minutes |
36 seconds |
| 99.5% |
1.83 days |
10.8 hours |
3.6 hours |
50.4 minutes |
7.20 minutes |
18 seconds |
| 99.9% |
8.76 hours |
2.16 hours |
43.2 minutes |
10.1 minutes |
1.44 minutes |
3.6 seconds |
| 99.95% |
4.38 hours |
1.08 hours |
21.6 minutes |
5.04 minutes |
43.2 seconds |
1.8 seconds |
| 99.99% |
52.6 minutes |
12.96 minutes |
4.32 minutes |
60.5 seconds |
8.64 seconds |
0.36 seconds |
| 99.999% |
5.26 minutes |
1.30 minutes |
25.9 seconds |
6.05 seconds |
0.87 seconds |
0.04 seconds |