Network setting preparations

Staging area subnet

Before setting up AWS Elastic Disaster Recovery (AWS DRS), you should create a subnet which will be used by AWS DRS as a staging area for data replicated from your source servers to AWS. You must specify this subnet in the replication template. You can override this subnet for specific source servers in the replication settings. While you can use an existing subnet in your AWS account, the best practice is to create a new dedicated subnet for this purpose. Learn more about replication settings.

Network requirements

The replication servers launched by AWS Elastic Disaster Recovery in your staging area subnet need to be able to send data over TCP port 443 to the AWS Elastic Disaster Recovery API endpoint at https://drs.{region}.amazonaws.com/. Replace “{region}” with the AWS Region code you are replicating to, for example “us-east-1” .

The source servers on which the AWS Replication Agent is installed need be able to send data over TCP port 1500 to the Replication Servers in the staging area subnet. They also need to be able to send data to AWS DRS's API endpoint at https://drs.{region}.amazonaws.com/. Replace “{region}” with the AWS Region code you are replicating to, for example “us-east-1” .

Operational subnets

Drill and recovery instances are launched in a subnet you specify in the Amazon EC2 launch template associated with each source server. The Amazon EC2 launch template is created automatically when you add a source server to AWS Elastic Disaster Recovery.