How Network Redundancy Fails When You Need It Most

In this episode, Lucas and Luna explore the paradox of network redundancy: why adding a second path sometimes makes your system less reliable. They break down the 2017 British Airways IT meltdown at Heathrow, where a single misconfigured backup generator caused a 30-hour outage that stranded 75,000 passengers. They explain the mathematics of shared-risk link groups and the concept of 'uncorrelated failures' — why your backup path is only as good as the least common denominator it shares with the primary. Finally, they discuss how modern engineering teams are shifting from traditional 1+1 redundancy toward a 'redundancy by diversity' model, where independent infrastructure, separate power feeds, and geographically diverse routes matter more than sheer path count. A concrete, cautionary look at why more isn't always better when it comes to keeping the network alive. #NetworkRedundancy #BritishAirways #HeathrowOutage #SharedRiskLinkGroup #SRLG #UncorrelatedFailures #NetworkReliability #Failover #BGP #DataCenterDesign #NetworkEngineering #Resilience #Technology #FexingoBusiness #BusinessPodcast #NetworkingTech #InternetInfrastructure #TechDeepDive Keep every episode free: buymeacoffee.com/fexingo