That's the point, yes

Okay sqo both disks are on VM_space_H1. Do a xe sr-param-list uuid=<SR UUID>, get the PBDs and for each do a xe pbd-param-list uuid=<PBD UUID> and paste the result

@Andrew thank you , it's NFS mount yes. i perform forget and remount and now is ok, most probably i chose older storage from another host, the menu to select storage for VM showing everything associated with the pool and sometimes this is confusing. Thanks for your comment.