The backups of three-node replica set instances can be downloaded based on the backup time.
Log on to the MongoDB console and find the target instance.
Click the instance ID or Manage to go to the Basic Information page.
Select Backup and Recovery in the left-side navigation pane.
On the Backup List page, select a time range and the backup data set you want to download, and click Download. See the following figure.
Note: You can run the following command to import data to a user-created database after the backup file is downloaded.
cat xx.ar| mongorestore -h xxx --port xxx -u xxx -p xxx --drop --gzip --archive -vvvv --stopOnError