Notes: 9's of reliability
Uptime
- Nine nines (99.9999999%)
- 31.5 milliseconds of downtime per year
- Eight nines (99.999999%)
- 315 milliseconds of downtime per year
- Seven nines (99.99999%)
- 3.15 seconds of downtime per year
- Six nines (99.9999%)
- 31.5 seconds of downtime per year
- Five nines (99.999%)
- 5 minutes 35 seconds of downtime per year
- Four nines (99.99%)
- 52 minutes 33 seconds of downtime per year
- Three nines (99.9%)
- 8 hours 46 minutes of downtime per year
- Two nines (99.0%)
- 87 hours 36 minutes of downtime per year
- One nine (90%)
- 36 days 12 hours of downtime per year