Avago Technologies MegaRAID SCSI 320-0 (520-0 CH) - Manual (Page 87)

Installing Clusters under Windows 2000 4-29
Copyright © 2003-2008 by LSI Corporation. All rights reserved.
Figure 4.11 Network Connections Dialog Box
In production clustering scenarios, you must use more than one
private network for cluster communication; this avoids having a
single point of failure. Cluster Service can use private networks
for cluster status signals and cluster management. This
provides more security than using a public network for these
roles. In addition, you can use a public network for cluster
management, or you can use a mixed network for both private
and public communications.
Verify that at least two networks are used for cluster
communication. Using a single network for node-to-node
communication creates a potential single point of failure. We
recommend that you use multiple networks, with at least one
network configured as a private link between nodes and other
connections through a public network. If you use more than one
private network, ensure that each uses a different subnet, as
Cluster Service recognizes only one network interface per subnet.
This document assumes that only two networks are in use. It
describes how you can configure these networks as one mixed
and one private network.