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TechnologyGenerated accuracy model review: 2026-05-06
Server Uptime SLA Calculator accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- Allowed downtime = (1 - uptime percent / 100) * period days * 24 hours.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Uptime Target: 99.9%
- Reporting Period: 30 days
Expected outputs
- Allowed Downtime: 43m 12s
- Allowed Downtime: 43.2 minutes
- Allowed Downtime: 2,592 seconds
- Required Uptime: 719.28 hours
Known limitations
- This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
- Use the result as a planning estimate unless the calculator page states a stricter purpose.
Assumptions
- The period is measured as continuous calendar days.
- This calculator does not interpret maintenance windows, service credits, exclusions, or contract language.
- Results are calculated locally and are for planning only.
Unit handling
- Uptime Target accepts values in %.
- Reporting Period accepts values in days.
- Allowed Downtime is displayed in minutes.
- Allowed Downtime is displayed in seconds.
- Required Uptime is displayed in hours.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
- Input precision follows configured step values where provided.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current server-uptime-sla-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Server Uptime SLA Calculator.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.