BMC runs on standby power and boots before the host; a rooted BMC is an OS-invisible, persistent foothold under the CPU
always-onobserved
| 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. |
|---|---|
| As of | 2025 |
| Source | Eclypsium / OCP DC-SCM · Standby boot sequence, steps 9–11: host power-on is blocked pending the BMC grant |
| Review | checking…review by 2026-10-20 · standard cadence |
| Recorded changes | last 2026-06-29 |
| Claim id | bmc-runs-on-standby-power-and-boots-before-the |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.