Notezilla keeps five copies of backups. And it takes a backup at startup. You can only change the location of the Backup folder from preferences (Advanced tab). To access Notezilla 's Preferences, right-click on the Notezilla icon, and choose Preferences from the menu.
I am not sure if you are syncing notes with our cloud system. Usually, that serves as a backup for most customers, and it is easy to set up any device with your notes by just downloading the notes from the cloud.
I suggest that you try the sync feature of Notezilla that will allow you to sync notes with other devices and PCs. Right-click on the Notezilla icon and choose Sync option to create a new sync account. You can also try our Android/iPhone apps that will allow you to access all your notes.
You can also use your backup tool to keep multiple copies of the Notezilla data file.