During the last weeks I did a lot of research on High Availability for Postgres and MariaDB. Both by my own research and also recommended by vendor's, I see replication as a better fit nowadays.
Some benefits as using a standby node for backup; scaling; the fact it is simpler (no need for storage replication) and the flexibility...
However; our own DBA's don't like the replication idea. Because they have to maintain 2 instances (non-valid IMO) and our Oracle DBA that mention's replication is only useful in addition to clustering.
But in practices; as failover is faster and each instances uses it's own SAN storage; I see less risk of data loss and down time... Also, multi-site storage has at least some impact on complexity and performance.
What is the opinion of dba stackexchange...?
-- a Linux architect