of human-error outages caused specifically by failure to follow established procedures — up 10 points from 48% the prior year
58%observed
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| Caveat | 2025 survey figure, retained deliberately as history. Uptime's Data Center Resiliency Survey 2026 (Annual outage analysis 2026, Figure 14, n=199) puts staff failure to follow procedures at 59% on its own question and population — a different survey vintage, not a restatement of this one; do not present 58% and 59% as the same observation. |
| As of | 2025 |
| Source | Uptime Institute Annual Outage Analysis 2025 |
| Review | checking…review by 2027-05-01 · standard cadence |
| Recorded changes | last 2026-06-29 |
| Claim id | of-human-error-outages-caused-specifically-by |
Where the guide uses it
- 0.5 Reliability, Redundancy & Availability: The Design-Basis Primer
- 12.1 Resilience Standards, Redundancy Topologies & Fault-Domain Engineering
- 14.11 Operations Organization, Workforce, Talent & Incident Command
- 14.12 Operational Procedures, Change Management & Human-Error Control
← Full numbers register — every date-stamped figure in the guide, with revision history.