# Managing data migrations in AWS DMS
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After you create a data migration, AWS DMS doesn't automatically start migrating data. You start a data migration manually when needed.

Before you start a data migration, you can modify all settings of your data migration. After you start your data migration, you can't change the replication type. To use another replication type, create a new data migration.

**To start a data migration**

1. Sign in to the AWS Management Console and open the AWS DMS console at [https://console.aws.amazon.com/dms/v2/](https://console.aws.amazon.com/dms/v2/).

1. Choose **Migration projects**. The **Migration projects** page opens.

1. Choose your migration project. On the **Data migrations** tab, choose your data migration. The **Summary** page for your data migration opens.

1. For **Actions**, choose **Start**.

   After this, AWS DMS creates a serverless environment for your data migration. This process takes up to 15 minutes.

After you start a data migration, AWS DMS sets its status to **Starting**. The next status that AWS DMS uses for your data migration, depends on the type of replication that you choose in the data migration settings. For more information, see [Migration statuses](dm-migrating-data-statuses.md).

**To modify a data migration**

1. Sign in to the AWS Management Console and open the AWS DMS console at [https://console.aws.amazon.com/dms/v2/](https://console.aws.amazon.com/dms/v2/).

1. Choose **Migration projects**. The **Migration projects** page opens.

1. Choose your migration project. On the **Data migrations** tab, choose your data migration. The **Summary** page for your data migration opens.

1. Choose **Modify**.

1. Configure the settings for your data migration.
**Important**  
If you have started a data migration, then you can't change the replication type.

1. To view your data migration logs in Amazon CloudWatch, select the check box for **Turn on CloudWatch logs**.

1. Choose **Save changes**.

After AWS DMS starts a data migration, you can stop it. To do so, choose your data migration on the **Data migrations** tab. Next, for **Actions**, choose **Stop**.

After you stop a data migration, AWS DMS sets its status to **Stopping**. Next, AWS DMS sets the status of this data migration to **Stopped**. After AWS DMS stops a data migration, you can modify, resume, restart, or delete your data migration.

To continue the data replication, choose the data migration that you stopped on the **Data migrations** tab. Next, for **Actions**, choose **Resume processing**.

To restart the data load, choose the data migration that you stopped on the **Data migrations** tab. Next, for **Actions**, choose **Restart**. AWS DMS deletes all data from your target database and starts the data migration from scratch.

You can delete a data migration that you have stopped or that you haven't started. To delete a data migration, choose it on the **Data migrations** tab. Next, for **Actions**, choose **Delete**. To delete your migration project, stop and delete all data migrations.