"Flailover" The primary fails because of a bug and so it fails over to the backup which flails-over because of the exact same bug, c.f. https://en.wikipedia.or

"Flailover" The primary fails because of a bug and so it fails over to the backup which flails-over because of the exact same bug, c.f. https://en.wikipedia.org/wiki/Ariane_5_Flight_501 https://en.wikipedia.org/wiki/Ariane_5_Flight_501