# 双机复制
- **[发送端服务器](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0774.html)**   
- **[主服务器](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0775.html)**   
- **[备服务器](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0776.html)**   
- **[逻辑复制](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0777.html)**