Sounds like you've been in environments that have done network block storage incorrectly. If you do multi-path, redundant/replicated network storage with proper

Sounds like you've been in environments that have done network block storage incorrectly. If you do multi-path, redundant/replicated network storage with proper configurations in place, you shouldn't have a single point of failure. Ceph oddities aside. Everything has issues given a long enough time span though. Each layer has an accounted level of risk, and it definitely is a balancing act.