Steps to back up DNAC Appliance to an external server. Two different methods:
Following the Cisco DNAC Administration Guide and using an Ubuntu VM
Using a Linux based file storage (if your server team has one)
There are some additional steps not in the DNAC Admin Guide which will help for a smoother implementation.
Cisco DNAC Administration Guide:
See Section: Example of NFS Server Configuration—Ubuntu
https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/2-3-3/admin_guide/b_cisco_dna_center_admin_guide_2_3_3/b_cisco_dna_center_admin_guide_2_3_3_chapter_0110.html
