I bought a 1 terabyte external hard drive specifically for backups. I keep it tucked away in a chest of drawers until needed, then plug it into the computer; do the backups, and unplug it to store away again. The drive is a basic Western Digital Book that uses USB-2 hook up. That's also the drive that I do my system backups to and since they are not "ON" constantly, they don't wear out like the internal drives. This technique keeps my info directly in MY control and not on some website that might get hacked or shut down.
I also got an external CD / DVD drive burner that is a simple, basic USB-2 hook up that is so small, it can also be tucked away in a drawer when not in use. It cost just $35 with free shipping on eBay.
I do not buy INTERNAL drives or burners anymore. The external ones using USB-2 are excellent and low cost; plus portable for use with other machines if I want to do that.