Network Redundancy

You can use the dual NIC (or multiple network interface) capabilities of each client or server, enabling you to specify a complete and unique network connection from a client to a server.

Consider the following diagram:

The above example shows two levels of redundancy:

• network redundancy
• server redundancy

Network Redundancy

Each of the system components in the cluster are connected to a second network (LAN 2). This is achieved by using the dual end points of each server. This provides connection to two separate LANs to provide for LAN redundancy as follows:

• If LAN 1 is suddenly inoperative, each component in the cluster can easily maintain connection by using LAN 2.
• In turn, if LAN 2 becomes inoperative, LAN 1 remains in operation.

Server Redundancy

For information about server redundancy, see Alarms, Reports and Trends Server Redundancy.

See Also