You must download the backup and restore helper script from the NSX Manager.
Verify that the machine used to run the helper script meets the system requirements. The helper script requires python 2 and TLS 1.2, and has been verified on Ubuntu 14.04.
From the command line:
Run the copy file command to copy the script to the remote server. The url argument specifies the destination for the script, using standard URL syntax, e.g. scp://user@server/home/path/to/destination.
nsx-manager-1> copy file backup_restore_helper.py url scp://firstname.lastname@example.org/vol0/backups/scripts/
From the API:
Send this API request, and save the output to a file called backup_restore_helper.py.
What to do next
Revert fabric changes since the last cluster backup.