Where should the AWS DMS replication instance be placed for the MOST optimal performance?

A Database Specialist is migrating a 2 TB Amazon RDS for Oracle DB instance to an RDS for PostgreSQL DB instance using AWS DMS. The source RDS Oracle DB instance is in a VPC in the us-east-1 Region. The target RDS for PostgreSQL DB instance is in a VPC in the use-west-2 Region.

Where should the AWS DMS replication instance be placed for the MOST optimal performance?
A . In the same Region and VPC of the source DB instance
B. In the same Region and VPC as the target DB instance
C. In the same VPC and Availability Zone as the target DB instance
D. In the same VPC and Availability Zone as the source DB instance

View Answer

Answer: C

Explanation:

https://docs.aws.amazon.com/dms/latest/userguide/CHAP_ReplicationInstance.VPC.html#

CHAP_ReplicationInstance.VPC.Configurations.ScenarioVPCPeer In fact, all the configurations list on above url prefer the replication instance putting into target vpc region / subnet / az.

https://docs.aws.amazon.com/dms/latest/sbs/CHAP_SQLServer2Aurora.Steps.CreateReplicationInstance.html