Summary: What would be your uptime - or downtime - for how many 9s.
Date: 20 February 2025
| Required Availability | Required Uptime hours/year | Allowable Downtime /year |
|---|---|---|
| 90% (0.9) | 7889.4 | 36.525 days |
| 99% (0.99) | 8678.34 | 3.6525 days |
| 99.9% (0.999) | 8757.23 | 8.766 hours |
| 99.99% (0.9999) | 8765.12 | 52.596 minutes |
| 99.999% (0.99999) | 8765.91 | 5.2596 minutes |