Purchase a feature of DMS - Data Management - Alibaba Cloud Documentation Center

Data Management (DMS) allows you to use the basic features for free. You can also purchase a billed feature of DMS, such as the Stable Change mode, the Security Collaboration mode, and sensitive data protection. This topic describes how to purchase a feature of DMS.

Prerequisites

If you are a Resource Access Management (RAM) user, the RAM user is granted the required permissions to purchase a feature of DMS.

Use an Alibaba Cloud account or a RAM user with the AdministratorAccess permission to create a policy that grants the required permissions to purchase a feature of DMS. For information about how to create a custom policy, see the Create a custom policy on the JSON tab section of the "Create custom policies" topic.
The following policy grants the required permission to purchase a feature of DMS:
```
{
    "Statement": [
        {
            "Action": "dms:*",
            "Effect": "Allow",
            "Resource": "*"
        }
    ],
    "Version": "1"
}
```
For more information about how to attach policies to a RAM user, see Grant permissions to a RAM user.

Procedure

Log on to the DMS console V5.0.
In the upper-right corner of the DMS console, choose > Billing > DMS Order Management.
Note
If you use the DMS console in normal mode, choose > DMS Order Management in the upper-right corner of the console.
In the Purchase specification details dialog box, click Go to sell to buy to go to the buy page.

Configure the parameters on the buy page. The following table describes the parameters.

Parameter	Description
Billing Method	Subscription: For long-term use, we recommend that you select the subscription billing method, which is more cost-effective than the pay-as-you-go billing method. You can receive larger discounts for longer subscription periods. Pay-as-you-go: If you select the pay-as-you-go billing method, fees are calculated on a daily basis. If you use the features of DMS for less than one day before you unsubscribe from the features, the usage duration is rounded up to one day. For more information, see Pricing.
Edition	The feature that you want to purchase. Control Mode: DMS provides the Flexible Management, Stable Change, and Security Collaboration control modes that you can use to manage instances. You can use the Flexible Management mode for free. Sensitive Data Protection: The sensitive data protection feature of DMS helps you detect, de-identify, and manage sensitive data. For more information, see the Billable items and prices section of the "Pricing" topic.
Control Mode	The control mode that you want to purchase. For more information, see Control modes. Stable Change: All features supported by the Flexible Management mode are available. In addition, the quotas for various features are increased. For example, data tracking can be used without limit, and the number of rows that can be exported free of charge is increased from 1 million to 20 million. Security Collaboration: All features supported by the Flexible Management and Stable Change modes are available. In addition, more features such as data access control, data change security, and DevOps can be used. You can also customize a variety of capabilities, such as R&D standards, R&D processes, and approval processes.
Number of Instances	The maximum number of instances for which you can enable the feature to be purchased.
Duration	Subscription: You can specify the subscription duration as needed. Note If you want the feature to be automatically renewed before the subscription expires, select Auto-renewal below the subscription duration. Pay-as-you-go: The fees are calculated on a daily basis.

Click Buy Now in the lower-right corner of the page.
Note
- If you select the pay-as-you-go billing method, you can purchase a feature multiple times. You can add an order to the cart and then configure another order. Then, you can place these orders in the cart at a time.
- If you select the subscription billing method, you cannot purchase a feature multiple times. Each feature can have only one valid subscription order. If you want to increase the quota for a feature that you purchase in subscription mode, you can upgrade the feature specifications. For more information, see Upgrade service specifications.

Related operations

After you purchase a feature of DMS, you can choose > Billing > DMS Order Management in the top navigation bar of the DMS console to view the order.

Note

If you use the DMS console in normal mode, choose > DMS Order Management in the top navigation bar of the console to view the order.