Overview

Before creating a DRS task, make preparations given in the following table to meet the environment requirements.

**Table 1** Preparations
Item	Description	Reference
Account	Prepare an account, create a user, and grant permissions to the user to use DRS.	If you do not have an account, register an account on the official website. Then, create a user and grant permissions to the user by referring to Permissions Management.
Database	Prepare the source and destination databases with required user permissions.	Different data flow types require different databases and permissions. Select a specific data flow type and view the related notes in this document.
Network	Before the migration, learn about the application scenarios and the supported network types.	DRS supports migration through the public network, VPC, VPN, and Direct Connect. VPC is suitable for migrations between cloud databases of the same account in the same region. VPN or Direct Connect is suitable for migrations from on-premises databases to cloud databases or between cloud databases across regions. Public network is suitable for migrations from on-premises databases or external cloud databases to destination databases. You need to configure network settings based on your service requirements. If the source database is a database on the public cloud, configure network settings by referring to From the Public Cloud to the Public Cloud. If the source database is a database built on an ECS on the public cloud, configure network settings by referring to From ECS Databases on the Public Cloud to the Public Cloud.