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>In the overnight hours of Tuesday into Wednesday, FAA officials decided to shut down and reboot the main NOTAM system – a significant decision, because the reb

>In the overnight hours of Tuesday into Wednesday, FAA officials decided to shut down and reboot the main NOTAM system – a significant decision, because the reboot can take about 90 minutes, according to the source. How often is the system rebooted? I haven't heard of it happening before and some quick searching didn't find any historical examples. Is it a scheduled event and no flights have departure times while this maintenance is taking place? I've found that issues tend to manifest on production systems with infrequent restarts.

bink 4y ago
It sounds more like there are a pair of systems where one operates as the primary and the other as a backup, and these can swap in case of problems with the primary. That's fairly typical in critical infrastructure. I've done testing on these types of systems in the past (carefully) and the owners will often let you test against the system that's currently the "backup". So they probably restarted the "primary" after performing a fail-over.