It is always a good idea to keep a backup of any important data, and with HS4 it is easy to create backups of your setup. By the end of the instructions below, you will easily be able to transfer your configurations from one system to another or get back up and running should your PC or HomeTroller experience fatal issues. The below instructions require Z-Wave Core 18.104.22.168 and Z-Wave UI 22.214.171.124. See here on setting up those plugins: Z-Wave Installation
See here for more information: Backup Interface
The file extension used for your backup file depends on which series interface you have. Z-Wave interfaces using the 500 series chip will save as a .zwave file while 700 series interfaces will save as a .nodes file. This is handled automatically and should not be changed.
If you have HS4 installed in a custom installation, you can change the save location for backups very easily by typing in the desired folder address. The default save location on Windows is C:\Program Files (x86)\HomeSeer HS4\html\backups, while it is /usr/local/HomeSeer/html/backups on Linux. If you are using a HomeTroller, it is not recommended to change the default save location for backups.