@robi @nebulon Thank you. I will try the recipe I found at Stack Exchange and then report back. In my situation it is for a home server. So I can easily connect a keyboard and monitor to enter the encryption password on the drive in the wake of a server reboot.
I do want to be able to do it remotely though if I'm not home. But the situation is not urgent for me. That explains my delay in following through. But I will.