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Introduction 13

Gigabit or 10 Gigabit Ethernet

The following are the Ethernet network connections available, depending on

your configuration:

• Public connection from the server modules to the public network

• Private node-to-node connection between the server modules for the

private network

• iSCSI connection between the server modules and storage system(s). For

more information, see "Supported Cluster Configurations" on page 16.

The server modules include two integrated Ethernet network interface cards

(NICs). You must configure at least two networks for each PowerEdge cluster

solution. One cluster network is configured for heartbeat communications

(private network) and is only accessible to the server modules in the cluster.

The other cluster network is configured for the client network (public

network) and is accessible to client systems. It is recommended that you

configure the same network interface on each node for the same role in the

cluster. For example, you can use the two integrated NICs to provide the

private and public cluster networks. Such a configuration allows an expansion

card in the server module to provide the I/O interface for the shared storage

system(s) in the cluster. Use an Ethernet expansion card for iSCSI shared

storage systems and use a Fibre Channel expansion card for Fibre Channel

shared storage systems. For more information about iSCSI and Fibre Channel

clusters, see "Supported Cluster Configurations" on page 16.

Ethernet Switch Module

The Ethernet switch module provides a switched connection to the

integrated NICs on each server module. Using the internal connections in the

system chassis, the Ethernet switch module can be used to provide the

following configurations:

• A switched connection to the client network (public network).

• Network connection to one or more server modules in the Cluster

configuration (private network).

• iSCSI connection between the server modules and storage system(s). For

more information, see "Supported Cluster Configurations" on page 16.

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