Geo-replication

Geo-replication allows for asynchronous replication of data between different sites through local networks or the internet. This provides high availability by having a copy of the data in a different geo-location, and ensures disaster recovery in case of failures.

Consider going the geo-replication route when there is a specific use case where the added layer of redundancy is needed. Remember that this is asynchronous replication, so, in the case of a disaster, consider the RPO and RTO times explained in the previous chapters.

The following diagram gives you a general understanding of how geo-replication works—Site A replicates to Site B through the WAN: