Why there are many configuration files on the Configuration File Which one is the important?

Zyxel_Jeff

Background and Scenario:

If pasting long time and you will notice that there are many config files exist on the firewall but which one is important?

Answer:

The device would automatically back up the running-config file whenever firmware updating or if detecting the config be modified to avoid there is any accident occurring or the administrator forgetting to back-up config. If you think those autobackup config files are useless for you, you could delete them. However, we still suggest that you at least reserve the startup.conf, last-good.conf, and system-default.conf config files on the firewall.