Assuming that you deployed Nathean Analytics to the following folder :
Use Windows Explorer to make a copy of the folder, and all is sub- folders and files, to a backup folder. Windows Explorer will normally name this copy as “Nathean – Copy”
After the copy operation you should see this
You now have a backup of the current installation.
You can keep as many backups as you wish (or your disk allows) but typically we keep no more than two backups at one time.