New Host on MSA2324i not Discovered

[rmrme]

Hello,

I have added a new Host on my MSA2324i and explicitly mapped a Volume to it.  The volume is not appearing in disk management of the Host.  I assume this is because, when I look at the Overview of the Hosts, my new Host is sitting at Discovered - No.

What do I need to do to get my new Host discovered?  The host is a VM on a Hyper-V server.  The Hyper-V server and other VMs are successfully discovered Hosts with volumes on the SAN explicitly mapped to them.

Do I need to install or configure something on my VM Host?

Sorry if this is a very simple question, with a really obvious answer.  I just haven't had much experience of working with SANs.

Thanks in advance for any help.

R