How to restore a remote full server backup in a new Plesk server?

Question

How to restore a remote full server backup in a new Plesk server?

Answer

Note: The remote backups for a Plesk server may generally be stored in one of the following remote storage solutions: 
FTP server  
Amazon S3 bucket  
Google Drive  
Microsoft Onedrive  
Dropbox

Once you've made sure that you have a backup in your remote storage, you may execute the steps below:

1. Log into Plesk

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) and checking the box Restore this backup despite the fact that it does not have a valid signature

Note: You may also select individual objects (such as separate sites) for restoration from that backup by using the steps here