Adding and separating storage to VMM Cloud

Hi

I have a VMM configuration with Hyper-v clusters using CSV storage. I want to create a new cloud and assign storage from an alternative storage array. As a test I have added a new volume/LUN to the host cluster as either available storage or shared storage/CSV. As available storage I cannot add it as a resource to the vmm Cloud, as a CSV it becomes part of the current CSV.

It looks like I need to create a new storage classification but I cannot find a way to add the new disk to a storage classification. Is this the way to do it?

Thanks

Steve