Hi, that is odd because when I contacted sales and described exactly what I wanted to do they said it supported it. In addition, prior to using 11.0.0, I attempted to use 10.3.2 and ran into the same problem.
I found the command line documentation for this product so thank you.
I will attempt again to try to use 10.3.2 to see if I can encrypt a second disk. The crazier question after that is it possible to encrypt a shared disk in a cluster? For example, two windows servers with Microsoft Failover Cluster installed, there is a shared disk between them. Can you encrypt that disk even with 10.3.2? Pre Sales guy said it should be able to be done.