Practical, first-hand writing for people who run ASIC fleets — the failure modes, the economics, and the operational habits that keep sites earning. No fluff, no fabricated numbers.
Firmware sleep mechanics, the reboot-persistence trap we verified on live 2022-era Antminer firmware, why every transition must be read back, client consent, and keeping planned downtime from poisoning your alerts.
What the machines actually do during a WAN outage, why hardware is the least of your worries, the real costs of going blind, and the site-design lessons from a double outage on a shared uplink.
