NonStop NS1000 Planning Guide (H06.08+)

NOTE: Because the system console and maintenance switch are single points of failure that
could disrupt access to OSM, this configuration is not recommended for operations that require
high availability or fault tolerance.
Primary and Backup System Consoles Managing One System
This configuration is recommended. It is similar to the setup configuration, but for fault-tolerant
redundancy, it includes a second maintenance switch, backup system console, and if a
modem-based remote solution is used, a second modem (modems not shown above). The
maintenance switches provide a dedicated LAN in which all nodes use the same subnet.
NOTE: A subnet is a network division within the TCP/IP model. Within a given network, each
subnet is treated as a separate network. Outside that network, the subnets appear as part of a
single network. The terms subnet and subnetwork are used interchangeably.
If a remote maintenance LAN connection is required, use the second network interface card
(NIC) in the NonStop system console to connect to the operations LAN, and access the other
devices in the maintenance LAN using Remote Desktop via the console.
System Console 111