Hello All,
I connected existing data center with NFS storage domain to a new Fiber-Channel storage domain according to the following guide, and I have three questions. 
https://www.ovirt.org/documentation/install-guide/chap-Configuring_Storage/

1. why does the storage domain asks me to "Use Host"?
2. is it possible to set the newly created fiber-channel storage(data domain) as master?

3. can I easily migrate all VM disks to the FC storage instead of the NFS?

Thank you!