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    Data Transmission Service:Purchase a DTS instance

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    Data Transmission Service:Purchase a DTS instance

    Last Updated:May 27, 2026

    Data Transmission Service (DTS) supports two task creation methods: configure-then-purchase and purchase-then-configure. This topic describes the purchase-then-configure process for data migration, data synchronization, data subscription, data verification, and Serverless tasks.

    Prerequisites

    Billing

    The Billing overview covers pricing.

    Purchase a data verification task

    1. Go to the purchase page using one of the following methods:

      • Go to the DTS purchase page.

      • On the Verification Task page, click Purchase Instance.

    2. Configure the parameters for the data verification task.

      Important

      • Data verification tasks are only available with the pay-as-you-go billing method.

      • You cannot purchase the incremental data verification feature separately.

      Category

      Parameter

      Description

      Basic configurations

      Billing method

      Select Pay-as-you-go.

      Feature

      Select Data Verification.

      Data verification type

      Fixed to full data verification.

      Source instance

      Select the database type for the source instance.

      Source region

      Select the region of the source database. This setting cannot be changed after purchase.

      Destination instance

      Select the database type for the destination instance.

      Destination region

      Select the region of the destination database. This setting cannot be changed after purchase.

      Resource group

      Select the resource group for the data verification task. What is Resource Management?.

      Quantity

      Number of links

      Number of data verification tasks to purchase. Default: 1. Maximum: 99.

    3. Click Buy Now and complete the payment.

    Next step: Configure the data verification task.

    Purchase a serverless task

    1. Navigate to the purchase page using one of the following methods:

      • Go to the DTS purchase page.

      • On the Data Synchronization Tasks page, click Purchase Instance.

    2. Configure the following parameters for the serverless task.

      Note

      • Currently, serverless tasks can be purchased with Pay-as-you-go for data synchronization only.

      • For serverless instances created using the purchase-before-configure approach, the default DU range is from 1 to 16.

      Category

      Parameter

      Description

      Basic Configurations

      Billing method

      Select Pay-as-you-go.

      Function

      Select Data Synchronization (Serverless).

      Incremental data verification

      Specifies whether to enable incremental data verification for the serverless task.

      Source instance

      Select the database type of the source instance.

      Source region

      Select the source database region. This cannot be changed after purchase. Proceed with caution.

      Destination instance

      Select the database type of the destination instance.

      Destination region

      Automatically set to the source database region. Cannot be changed.

      Synchronization topology

      Fixed to One-way Synchronization.

      Resource group

      Select the resource group for the serverless task. What is Resource Management?.

      Quantity

      Number of links

      Specifies the number of serverless tasks to purchase at once. Default: 1. Maximum: 99.

    3. Click Buy Now and complete the payment.

    Next step: Configure a serverless task the same way as a data synchronization task. Configure a data synchronization task.

    Purchase a data migration task

    Note

    You can also configure the migration task before purchasing it. Configure a Migration Task.

    1. Go to the purchase page in one of the following ways:

      • Go to the DTS purchase page.

      • On the Data Migration page, click Purchase Instance in the upper-right corner.

    2. Configure the data migration task parameters.

      Note

      Currently, you can purchase data migration tasks only by using the pay-as-you-go billing method.

      Category

      Parameter

      Description

      Basic configurations

      Billing method

      Select Pay-as-you-go.

      Task type

      Select Data Migration.

      Incremental data verification

      Specify whether to enable incremental data verification for the migration task.

      Region

      Select the region where the destination database is located.

      Instance class

      DTS offers instance classes with different performance levels that affect migration speed. Select a class based on your requirements. Data migration instance classes.

      Resource group

      Select the resource group for the migration task. What is Resource Management?.

      Quantity

      Number of instances

      Number of data migration tasks to purchase. Default: 1. Maximum: 99.

    3. Click Buy Now and follow the prompts to complete the payment.

    Next step: Configure a Migration Task.

    Purchase a data synchronization task

    Important

    1. Access the purchase page using one of the following methods:

      • Go to the DTS purchase page.

      • On the Data Synchronization Tasks page, click Purchase Instance.

    2. Configure the parameters as described in the following table.

      Category

      Parameter

      Description

      Basic configurations

      Billing method

      • Subscription: Prepaid upon task creation. Suitable for long-term needs and more cost-effective than pay-as-you-go. Longer subscriptions receive larger discounts.

      • Pay-as-you-go: Postpaid with hourly charges. Suitable for short-term needs. Release the task at any time to stop billing.

      DTS instance cluster type

      Select Public Cluster.

      Note

      This parameter is available only when Billing method is set to Subscription.

      Feature

      Select Data Synchronization.

      Incremental data verification

      Specifies whether to enable incremental data verification.

      Note

      Incremental data verification is not supported for the subscription billing method.

      Source instance type

      Select the database type of the source instance.

      Source instance region

      Select the region of the source database. This setting cannot be changed after purchase, so choose carefully.

      Destination instance type

      Select the database type of the destination instance.

      Destination instance region

      Select the region of the destination database. This setting cannot be changed after purchase, so choose carefully.

      Synchronization topology

      Select One-way Synchronization or Two-way Synchronization.

      Synchronization link specification

      DTS offers link specifications with different performance levels, measured by records synchronized. Synchronization link specifications.

      Note

      Link specification affects synchronization speed. For production environments, select small or higher.

      Resource group

      Select the resource group for the synchronization task. What is Resource Management?.

      Purchase

      Subscription duration

      Select the subscription duration: 1-9 months, or 1, 2, or 3 years.

      Note

      • This parameter is available only when Billing method is set to Subscription.

      • You can select the Auto-renewal checkbox as needed.

      Number of links

      Number of data synchronization tasks to purchase. Default: 1. Maximum: 99.

      Note

      This parameter is available only when Billing method is set to Pay-as-you-go.

      Quantity

      Number of data synchronization tasks to purchase. Default: 1. Maximum: 99.

      Note

      This parameter is available only when Billing method is set to Subscription.

    3. Click Buy Now and follow the on-screen instructions to complete the payment.

    Next step: Configure a Synchronization Task.

    Purchase a change tracking task

    Note

    You can also configure a change tracking task before purchasing it. Configure a change tracking task.

    1. Go to the purchase page by using one of the following methods:

    2. Configure the change tracking task parameters.

      Category

      Parameter

      Description

      Basic configurations

      Billing method

      • Subscription: Prepaid. More cost-effective than pay-as-you-go for long-term usage. Longer subscriptions receive larger discounts.

      • Pay-as-you-go: Postpaid with hourly charges. Suitable for short-term needs. Release the task at any time to stop billing.

      DTS instance cluster type

      Select public cluster.

      Note

      This option is available only when Billing method is set to Subscription.

      Function

      Select Change Tracking.

      Subscription instance type

      Select the database type to track.

      Source region - subscription

      Select the source database region. This cannot be changed after purchase.

      Resource group

      Select the resource group for the change tracking task. What is Resource Management?.

      Quantity

      Subscription duration

      Select the subscription duration: 1-9 months, or 1-3 years.

      Note

      • This option is available only when Billing method is set to Subscription.

      • You can select the auto-renewal checkbox as needed.

      Number of links

      Number of change tracking tasks to purchase. Default: 1. Maximum: 99.

      Note

      This option is available only when Billing method is set to Pay-as-you-go.

      Quantity

      Number of change tracking tasks to purchase. Default: 1.

      Note

      This option is available only when Billing method is set to Subscription.

    3. Click Buy Now and follow the prompts to complete the payment.

    Next steps: Configure a change tracking task.