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What is System Uptime?

Share of time a system is available.

How to calculate it

Calculate System Uptime as: Uptime / Total time × 100. Pull the inputs from your connected data and track the trend over time in your dashboard.

Examples

Example 1

43,200 minutes available, 43 down -> 99.9% uptime ('three nines').

Example 2

Of 43,200 available minutes in a month, 43 are down -> 99.9% uptime, meeting a three-nines SLA with little margin to spare.

Why it matters

System uptime is the share of time a system is available and is a core reliability and SLA metric. It directly affects customer trust and, in many contracts, financial penalties. Counting partial outages as full uptime overstates reliability and hides degraded experiences.

Benchmark context

99.9% ('three nines') is common, allowing about 8.8 hours of downtime a year; mission-critical systems target 99.99% or higher.

Common pitfalls

Counting partial outages as full uptime.

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