How to restore a full server backup in a new Plesk server?
For Plesk backup located in remote storage
The remote backups may be stored in one of the following remote storages:
2. If the backup is not stored on a remote FTP server, install the corresponding remote backup extension from the list above on the new Plesk server
3. Connect the remote storage containing the backup to restore
4. Navigate to Tools & Settings > Backup Manager and open the backup that should be restored
5. Restore the backup by selecting All objects (entire system)