Читаю kops high availability доку и никак не пойму, что

Question

Читаю kops high availability доку и никак не пойму, что

делать с этим противоречием (если я все верно понял):

Kops has experimental support for running multiple masters in the same AZ, but it should be used carefully. If we create 2 (or more) masters in the same AZ, then failure of the AZ will likely cause etcd to lose quorum and stop operating (with 3 nodes). Running in the same AZ therefore increases the risk of cluster disruption, though it can be a valid scenario, particularly if combined with federation.
и двумя абзацами ниже:

Notes (Best Practice)

In regions with 2 Availability Zones, deploy the 3 masters in one zone and the nodes can be distributed between the 2 zones. This can be done by specifying the flags:
--master-count=3
--master-zones=$MASTER_ZONE
--zones=$NODE_ZONES
у кого-то был опыт с двумя зонами и копсом, в чем соль?