Feature request: disaster recovery replication

[busser]

OpenBAO is often a core part of a company's infrastructure and is usually a single point of failure. As such, organisations running OpenBAO often have a disaster recovery plan. Disaster recovery would be much easier and much more reliable if OpenBAO supported replication. In the event that the primary OpenBAO cluster goes down, a secondary cluster could be promoted to take its place. Before the disastrous event, the secondary cluster would act as a replica of the primary.

Here is Vault's documentation of the equivalent enterprise feature: https://developer.hashicorp.com/vault/tutorials/enterprise/disaster-recovery