Meta reports Fleetscanner CPU-fleet periodic tests cover the fleet every 45–60 days
45–60 daysobserved
| 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. |
|---|---|
| Scope | CPU-fleet detection example. Coverage cadence is not detection latency for every defect or GPU/HBM diagnostic coverage. Hardware Sentinel coverage ratios are a distinct result. |
| As of | 2025-07-22 |
| Source | Meta Engineering, How Meta keeps its AI hardware reliable, July 22, 2025; periodic-testing paragraph. |
| Review | checking…review by 2026-12-08 · standard cadence |
| Recorded changes | last 2026-09-16 · 2 revisions tracked |
| Claim id | fleetscanner-full-fleet-sdc-sweep-cadence |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.