NSX Manager has a backup and restore functionality. That process creates a backup of the entire NSX fabric and puts that backup on a remote (s)FTP server. All configuration is available within that backup, the Edge configuration is not separate. Being a good IT-citizen, of course the backup is one of the configurations you do during the installation, so you always have a backup available.
I have a couple points for this post:
- You can restore a NSX Manager backup non-disruptively (*),
- When you restore a NSX Manager backup, existing NSX Edges are not effected and continue to operate,