Customer business is very important and has a large amount of data, requiring the best...

In the same city set up two data centers to do synchronous replication, located in another remote data center to do asynchronous remote replication

Set up two data centers in the same city to form a dual disaster recovery network

Set up a data center in the local and remote sites to form a dual-active disaster recovery network

In the same city set up two data centers to do double live in another remote data center to do asynchronous remote replication