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points by 80fj0348i 1 day ago | 0 comments
That airport did have two redundant connections, this was a swiss cheese failure where one was under maintenance and the other was severed by an independent event.
[–] alt227 1 day ago
> one was under maintenance

So they didnt have a redundant connection. They had 1 live one that was severed.

[–] superxpro12 1 day ago
they did... it was just singly redundant. they would need double redundancy here. so 3 connections, not 2
[–] alt227 1 day ago
Taking one connection out for maintenance and leaving only 1 live connection is not redundancy, it is a failed backup.

Redundancy is always having more than one live connection.