Unverified50% confidenceFactExact time
云计算行业SLA通常承诺99.9%至99.999%不等的服务可用性，对应年度最大停机时间从8.76小时到约5.26分钟不等
1
Sources
50%
Confidence
Long-term
Relevance
7/10/2026
First Seen
Sources
Related Claims
UnverifiedSLA availability is typically measured in N nines: 99.9% means approximately 43 minutes of allowable downtime per month, while 99.99% means approximately 4.3 minutes.83% similarUnverifiedA success rate of 99.95% corresponds to an allowable downtime of approximately 21.9 minutes per month, which falls within the standard commercial service-level SLA.80% similarUnverified错误预算（Error Budget）机制中，若系统 SLO 为 99.9% 可用性，则每月允许约 43 分钟的停机时间76% similar
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