# Create an AWS DMS replication instance for MongoDB migration


To perform replication in AWS DMS, you need a replication instance.

1. Open the AWS DMS console at https://console.aws.amazon.com/dms/v2/.

1. In the navigation pane, choose **Replication instances**.

1. Choose **Create replication instance** and enter the following information:
   + For **Name**, enter `mongodb2docdb`.
   + For **Description**, enter `MongoDB to Amazon DocumentDB replication instance`.
   + For **Instance class**, keep the default value.
   + For **Engine version**, keep the default value.
   + For **VPC**, choose your default VPC.
   + For **Multi-AZ**, choose **No**.
   + For **Publicly accessible**, enable this option.

   When the settings are as you want them, choose **Create replication instance**.

**Note**  
You can begin using your replication instance when its status becomes **available**. This can take several minutes.