@howtogravity OK very good. The lsblk program tells us everything, and your setup is perfect. As long as when you reboot the lsblk gives you the same values you are good to go.
So if you look at the output of lsblk you can see that /dev/sdb1 (the first partition on the second hard drive) is connected to (mounted on) /images. This means any files written to /images will go to your second hard drive.
The output of the df -h program tells us how much disk usage you currently have/are using. Those numbers look good too.