If the IP address range specified for discovery includes the management server IP addresses, and the management server service processor port is connected to the management network, the discovery process discovers the management server. Subsequently, it is possible that a load os operation that includes the discovered management server will attempt to load an OS to the management server, thus causing the management server to reboot.
Solution:
Disconnect the management server's service processor port from the management network.
Delete the management server from the list of discovered servers in N1 System Manager.