Illustrative independent optical-population event cadence
about 110 s between flaps; about 1 h between hard failuresmodeled
| Value kind | modeled — Interpret this value according to its displayed kind, scope, source, and as-of date. |
|---|---|
| Scope | Illustrative assumed rates, not measured fleet telemetry. Count modules, not duplex links, and model common-cause faults separately. Component events become job interruptions only through topology, recovery and the jobs each event touches. The paper's own prose figures for ten million optics (a flap about every 48 s, a hard failure every few days) do not follow from these per-optic inputs; the guide uses only the inputs. |
| As of | 2026-03-04 |
| Source | Per-optic assumptions (10^7 h hard MTBF, 3x10^5 h mean time to flap) from an unattributed OCP working-session slide (2025-11-06), as reproduced in Borrill, arXiv 2603.03736 v2 (2026-09-09), which does not validate them; the guide recomputes the aggregate for exactly 10M modules. · Introduction and Table 1; per-optic assumptions ~10^7 h hard-failure MTBF and ~3x10^5 h mean time to flap |
| Derivation | Assume exactly N=10,000,000 optical modules, M_flap=300,000 h and M_hard=10,000,000 h, independent constant rates. M_flap/N*3600=108 s; M_hard/N=1 h. Display rounding: about 110 s and about 1 h. |
| Review | checking…review by 2027-03-01 · standard cadence |
| Recorded changes | last 2026-10-16 · 5 revisions tracked |
| Claim id | link-flap-cadence-in-a-10m-optic-fleet-hard |
Where the guide uses it
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