Proxmox 3.0 - Cluster with 2 Nodes but can't add a shared storage

Hello Community :)

my cluster with 2 nodes (master, slave) need a share storage, the storage server have nfs and iscsi I tryed both types.

ISCSI:
But if I add on the webinterface "Datacenter > Storage > Add > iSCSI > name, ip, target" and click on add. I cant create a VM oder CT on the storage. Looks like this:



The content is just Images not ISO or other content.


NFS:
After this i Tryed to add a NFS shared storage, but if I click on "Datacenter > Storage > Add > NFS > name, ip, and I can't select on "Export", like this:




It doen't matter which storage solution I use, but one of the both solution I need for my cluster. The Storage server work fine (Open-E).


Thanks and sorry for my bad english.


Marco