Restore not finding backups

Hello! I have a same problem. There are two servers on my local network. Both installed as openmediavault plugins. Each of them backups different cliens. But when I try to boot restore CD, it can seek only clients of one server. When that server is offline, the dialog of restore CD says that can’t find servers, and if I enter IP address of second server it says that no any clients found. Ping is OK, all computers in one subnet. How I can sign the second server to restore from it with CD?