Availability math
Uptime SLA calculator
Use these downtime budgets to choose monitoring intervals and response expectations that match your promise to customers.
| Target | Monthly downtime budget | Practical monitoring note |
|---|---|---|
| 99% | 7h 18m | Five-minute checks are usually enough for awareness and support follow-up. |
| 99.5% | 3h 39m | Five-minute checks still work, but incident ownership should be clear. |
| 99.9% | 43m 49s | Use one-minute checks and alert channels your team actually watches. |
| 99.95% | 21m 54s | Short checks, fast triage, and status updates need to be rehearsed. |
| 99.99% | 4m 23s | This usually needs redundant infrastructure and contractual operations support. |
How ErrorNotifier fits
Free workspaces start with five-minute checks. Paid plans can move to one-minute or thirty-second checks, add Slack and signed webhooks, and keep longer history for reviews.
Public demo
Review the real product screens with read-only mock data
Open the demo workspace to inspect monitors, incidents, domains, alert channels, status pages, projects, issues, automated test runs, releases, artifacts, audit history, and umbrella reports without creating an account.