Question

How much does AWS DMS cost?

Answer 1

The cost of using AWS Database Migration Service (DMS) depends on several factors, including the source and target database engines, the amount of data migrated, the replication instance type, and any additional features or options you choose. Here's an overview of the pricing factors for AWS DMS:

1. Instance Hours:

   • AWS DMS charges for the time your replication instances are running, billed per hour.
   • The hourly rate varies based on the instance class and region where the replication instance is deployed.
   • You can choose between on-demand instance pricing or reserved instance pricing for longer-term commitments, which can offer cost savings.

2. Data Transfer Fees:

   • AWS DMS charges for data transferred during migration, replication, and change data capture (CDC) activities.
   • Data transfer fees are based on the amount of data transferred (in GB) between the source and target databases.
   • Data transfer fees vary depending on the source and target database engine, as well as the AWS region where the replication instance is deployed.

3. Storage Costs:

   • AWS DMS may incur additional storage costs if you choose to use AWS-managed storage for replication task logs and cached data.
   • Storage costs are based on the amount of data stored (in GB) and the storage class used (e.g., Amazon S3 Standard, Amazon S3 Glacier).

4. Change Data Capture (CDC) Costs:

   • If you enable change data capture (CDC) for ongoing replication, AWS DMS charges for CDC data storage and transfer.
   • CDC costs are based on the amount of CDC data generated and stored in Amazon S3.

5. Additional Features:

   • AWS DMS offers additional features and options, such as schema conversion tools, data validation, and ongoing replication monitoring.
   • Some of these features may incur additional costs, depending on your usage and requirements.

It's important to review the AWS DMS pricing details and consult the AWS pricing calculator to estimate the cost of your migration based on your specific migration scenario and requirements. You can also use AWS Cost Explorer to analyze your usage and forecast your AWS DMS costs over time.