When it comes to securing your data, network, & servers, you have to spend the time and money to do it right. Otherwise, you might as well just throw away what you have now.
Your data is important, and needs to be secure. You have to come up with a plan and test it to make sure it works
1: Back up on site
2: Back up off site
3: Back up Daily, Monthly, Quarterly, and Yearly
4: Test all aspects of your back up solution. Test a disaster, and recovery of data.