This topic describes how to determine the type of a Data Transmission Service (DTS) instance based on the regions in which the source and destination databases reside.
Background information
DTS regions can be divided into regions in China and regions outside China.
Regions in China include the Chinese mainland, China (Hong Kong), China (Macao), and China (Taiwan).
Regions outside China are regions other than the Chinese mainland, China (Hong Kong), China (Macao), and China (Taiwan).
Instance types
The type of a DTS instance is determined by the regions in which the source and destination databases reside. The following table describes the types of DTS instances.
If you want to configure a cross-border or cross-region data migration instance, the source and destination databases must meet the following requirements:
If the Access Method parameter is set to Alibaba Cloud Instance for the source database, the source database must have a public endpoint.
If the Access Method parameter is not set to Alibaba Cloud Instance for the source database, the destination database must have a public endpoint.
Region in which the source database resides | Region in which the destination database resides | Instance type |
Region in the Chinese mainland | Region in the Chinese mainland (same as the source region) | Same-region |
Region in the Chinese mainland (different from the source region) | Cross-region | |
China (Hong Kong), China (Macao), China (Taiwan), or a region outside China | Cross-border | |
China (Hong Kong) | Region in the Chinese mainland | Cross-border |
China (Hong Kong) | Same-region | |
China (Macao), China (Taiwan), or a region outside China | Cross-region | |
China (Macao) | Region in the Chinese mainland | Cross-border |
China (Macao) | Same-region | |
China (Hong Kong), China (Taiwan), or a region outside China | Cross-region | |
China (Taiwan) | Region in the Chinese mainland | Cross-border |
China (Taiwan) | Same-region | |
China (Hong Kong), China (Macao), or a region outside China | Cross-region | |
Region outside China | Region in the Chinese mainland | Cross-border |
Region outside China (same as the source region) | Same-region | |
China (Hong Kong), China (Macao), China (Taiwan), or a region outside China (different from the source region) | Cross-region |