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Azure Database Migration ServiceAzure Database Migration Service

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The Azure Database Migration Service (DMS) is a fully managed service that is designed for both operational database and data warehouse migrations.

The Standard pricing tier supports offline (also called “one-time”) migrations. The Standard pricing tier, which offers 1-, 2-, and 4-vCore options, is generally available and free to customers.

The Premium pricing tier supports offline and online migrations (also called "continuous migration") for business critical workloads that require minimal downtime. The Premium pricing tier is generally available.

Pricing Details

SQL Database Elastic Pool is a shared resource model that enables higher resource utilization efficiency, with all the databases within an elastic pool sharing predefined resources within the same pool. The workload pattern is well defined and is highly cost-effective in multitenant scenarios. Elastic pool is best for new SaaS apps, or for modernizing existing apps to SaaS.

Standard

Most small- to medium- business workloads (supports offline migration only)

Compute

Compute is provisioned in virtual cores (vCores). A vCore represents a logical CPU.

*The following prices are tax-inclusive.

*Monthly price estimation is based on a usage of 31 days per month.
vCore Price*
1 Free
2 Free
4 Free

Premium

Large or business critical workloads (supports online migrations, offline migrations, and faster migration speeds)

Compute

Compute is provisioned in virtual cores (vCores). A vCore represents a logical CPU.

*The following prices are tax-inclusive.

*Monthly price estimation is based on a usage of 31 days per month.
VCore Price*
4 ¥ 1.9/hour
(about¥ 1413.6/month)
* DMS Premium 4-vCore is free for 6 months (183 days) from the DMS service creation date before incurring any charges.

FAQ

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Overview

  • How is my bill calculated for the Standard tier of Database Migration Service?

    The Standard tier of Database Migration Service supports offline migrations and is free to use.

  • How is my bill calculated for the Premium tier of Database Migration Service?

    DMS Premium tier is billed on a predictable, hourly rate based on provisioned compute in vCore for your migration service.

    You can use 4 vCore Premium DMS for free for 6 months (183 days) from DMS service creation before billing starts.

    For example:

    • If you use 4 vCore Premium DMS for 6 months (183 days) or less from the time of DMS service creation, you will not be billed (DMS Premium 4 vCore is free for 183 days from DMS service creation). So if you use 4 vCore Premium DMS for 3 months, it will be free.
    • If you create a 4 vCore Premium DMS service on March 15, your 6-month (183 days) free period will start when you create a DMS service on March 15 and will continue until September 14. For usage occurring on or after September 15, you will be billed per hour for the compute resources you provision. If you use 4 vCore Premium DMS from March 15 to November 1, you will have free usage until September 14 (183 days) and then will be billed for usage from September 15 to November 1.
  • How long can I use the Premium tier of Database Migration Service?

    Once you create a DMS service, you can use DMS for up to 1 year from the date of service creation.

  • How many DMS services can I create?

    Customers can create 2 DMS services per subscription. To create additional services, please create a support ticket.

Support & SLA

If you have any questions or need help, please visit Azure Support and select self-help service or any other method to contact us for support.

To learn more about the details of our Service Level Agreement, please visit the Service Level Agreements page.

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