Cannot expand Storage Pool

[sweeney]

When I look at my storage pool it is only using 1 out of 4 drives for the pool. The other drives are listed and their status is good. When I try to edit the storage pool the option box comes up to allow me to edit/add additional drives, however the whole box is grayed out and I get a spinning circle in the center of it. I let it stay this way for several hours, but it never changes. Any idea how I can add the rest of my drives?

[sweeney]

I deleted the volume and the storage pool. I'm now able to create a new storage pool and use all 4 drives.