Creating an RDS Backup Migration Task

Supported Source and Destination Databases

**Table 1** Supported databases
Backup File	Destination DB
RDS for SQL Server full backup file versions: Microsoft SQL Server 2008 Microsoft SQL Server 2012 Microsoft SQL Server 2014 Microsoft SQL Server 2016 Microsoft SQL Server 2017 Microsoft SQL Server 2019	RDS for SQL Server Microsoft SQL Server 2008 (Existing version) Microsoft SQL Server 2012 Microsoft SQL Server 2014 Microsoft SQL Server 2016 Microsoft SQL Server 2017 Microsoft SQL Server 2019 NOTE: The major version of the destination database must be the same as or later than that of the source database. The edition of the destination database must be the same as or later than that of the source database, for example, from Web Edition to Standard Edition, from Standard Edition to Enterprise Edition, or from Enterprise Edition to Enterprise Edition.

Prerequisites

You have logged in to the DRS console.
Your account balance is greater than or equal to $0 USD.
For details about the supported DB types and versions, see Supported Databases.
If a subaccount is used to create a DRS task, ensure that an agency has been added. For details about how to create an agency, see Agency Management.

Before Backing Up File

Learn the backup migration constraints before starting a migration task.

**Table 2** Before Backing Up File
Scenario	Preparations
RDS full backup files	The source Microsoft SQL Server DB instance has full backups. If there are no full backups, create a full backup for the DB instance. For details, see Creating a Manual Backup in Relational Database Service User Guide.

Precautions

This section describes constraints on backup migrations of Microsoft SQL Server databases.

**Table 3** Precautions
Type	Restrictions
Database permissions	Before creating a backup migration task, ensure that the account has the permission to operate the RDS service. For details about RDS permissions and operations, see RDS Service Overview.
Backup database names	Backup database names are case-insensitive, must be unique, and cannot be any of the following: msdb master model tempdb rdsadmin resource
New database name	The new database name must be unique and cannot be any of the following (case-insensitive): msdb master model tempdb rdsadmin resource The new database name contains 1 to 128 characters, including letters, digits, underscores (_), and hyphens (-).
Backup file sources	RDS full backups: Backup files are manually or automatically created for RDS DB instances.
Precautions	The available disk space of the destination database is at least 1.5 times the total data size of the backup database. Backup database name is case-sensitive and must be the same as the database name in the backup file. The database backup file from a database of later version cannot be restored on the instance database of an earlier version (for example, restored from version 2017 to 2016). The restoration from Enterprise Edition to Standard Edition to Web Edition may fail. That depends on whether the features of the later version are enabled. During a migration, if Overwrite Data is set to Yes, high availability of the destination database is disabled by default. After the migration is complete, high availability is restored automatically. During a migration, stop writing transactions to the destination database. If a primary/standby switchover of the destination database is performed, the backup migration fails. In this case, the migration task cannot be restored.

Procedure

This section describes how to create an RDS full backup migration task. You can use the full backups of Microsoft SQL Server DB instances in the cloud to migrate data.

On the Backup Migration Management page, click Create Migration Task.

On the Select Backup page, specify information about the task and backup files. Then, click Next.

Figure 1 Task information

**Table 4** Task information
Parameter	Description
Region	The region where your service is running. You can change the region. To reduce latency and improve access speed, select the region closest to your services.
Project	The project corresponds to the current region and can be changed.
Task Name	The task name must start with a letter and consist of 4 to 50 characters. It can contain only letters, digits, hyphens (-), and underscores (_).
Description	The description can contain up to 256 characters and cannot contain special characters !=<>&'\"

Figure 2 Backup file information

**Table 5** Backup file information
Parameter	Description
Database Type	Select Microsoft SQL Server.
Backup File Source	Select RDS full backup. NOTE: Select a backup file whose status is Completed.
Enterprise Project	An enterprise project you would like to use to centrally manage your cloud resources and members. Select an enterprise project from the drop-down list. The default project is default. For more information about enterprise projects, see Enterprise Management User Guide. To customize an enterprise project, click Enterprise in the upper right corner of the console. The Enterprise Project Management Service page is displayed. For details, see Creating an Enterprise Project in Enterprise Management User Guide.
Tags	Tags a task. This configuration is optional. Adding tags helps you better identify and manage your tasks. Each task can have up to 20 tags. After a task is created, you can view its tag details on the Tags tab. For details, see Tag Management.

On the Select Destination page, specify database information and click Next.

Figure 3 Database information

**Table 6** Database information
Parameter	Description
Destination RDS DB Instance Name	Select a destination RDS DB instance.
Backup Database Name	After you select the destination RDS DB instance, all databases to be restored are automatically displayed. You can select databases to be restored as required and rename them. Backup Database Name: Name of the database to be restored. New Database Name: The backup database name must consist of 1 to 64 characters. It can contain only uppercase letters, lowercase letters, digits, hyphens (-), and underscores (_). If the name is not specified, the original database name is used. NOTE: The backup database can be renamed. A maximum of 100 backup databases can be created. The new database name cannot be the same as the name of any other database in the source.

On the Confirm Task page, check configuration details, read and agree to the agreement, and click Next.

If the SQL Server source contains non-clustered index tables, the index information of non-clustered index tables will become invalid after the SQL Server backups are restored to a new database. For the best performance, rebuild the indexes after the backup migration. In addition, the backup files store only database-level information. If the SQL Server source contains some instance-level configurations, such as login, permission, DBlink, and job, migrate these configurations by referring to Best Practices.
In the task list on the Backup Migration Management page, check whether the task is in the Restoring status. If the migration is successful, the task status becomes Successful.