Table of Contents
The Math Behind Uptime Percentages
| Uptime | Annual Downtime | Monthly Downtime |
|---|---|---|
| 99% | 87.6 hours | 7.3 hours |
| 99.9% | 8.76 hours | 43.8 minutes |
| 99.95% | 4.38 hours | 21.9 minutes |
| 99.99% | 52.6 minutes | 4.4 minutes |
| 99.999% | 5.26 minutes | 26.3 seconds |
What SLAs Typically Exclude
Most hosting SLAs exclude: scheduled maintenance windows, DDoS attacks beyond their mitigation capacity, force majeure events, customer-caused issues, and issues in upstream providers. Always read the exclusions — they determine how meaningful the SLA actually is.
FAQ
What compensation do I get if uptime falls below SLA?
Most providers offer service credits (typically 10-100% of monthly fee) rather than cash refunds. Power Down's SLA includes service credits for outages outside scheduled maintenance.
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