You can migrate data from a user-created MongoDB database to an ApsaraDB for MongoDB instance. Please pay close attention to the limits of ApsaraDB for MongoDB.
|Deploy an instance||Standalone instances can only be created in the China (Hangzhou), China (Shanghai), China (Qingdao), China (Beijing), and China (Shenzhen) regions.|
|Database version||The MongoDB version must be 3.4.|
The storage engine must be WiredTiger.
|Public connection address||Connecting to ApsaraDB for MongoDB instances over the Internet poses security risks. By default, only a VPC connection address is provided after an instance is activated. If you need to connect to an instance over the Internet, apply for a public endpoint. For more information, see Apply for a public endpoint.|
|Restart an instance||You must log on to the ApsaraDB for MongoDB console or call the RestartDBInstance operation to restart an instance.|
|Migrate data||For details about data migration, see Migrate user-created databases to Alibaba Cloud by using tools provided by MongoDB and Migrate user-created standalone MongoDB databases to Alibaba Cloud by using DTS.|
|Back up data||Standalone instances are backed up in snapshot mode due to their special architecture.
Note Snapshot backups retain the state of disk data from a certain time point.
|Restore data||You can only create instances based on backup data. For more information, see Restore data to a new ApsaraDB for MongoDB instance by backup set.|
|Modify the parameters of an instance||For security and stability purposes, some parameters cannot be modified. For more information, see Configure database parameters for an ApsaraDB for MongoDB instance.|