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16 Introduction

Supported Cluster Configurations

The PowerEdge blade servers support both Fibre Channel and iSCSI cluster

configurations using either Fibre Channel mezzanine cards or Ethernet

mezzanine cards to connect to the corresponding shared storage system in

either direct-attached or

switch

-attached environments.

Direct-Attached Cluster

In a direct-attached cluster, the cluster nodes are directly attached to a single

storage system. The HBAs (mezzanine cards/daughter cards) in the nodes are

internally connected to the pass-through modules. The pass-through modules

are connected by cables directly to the RAID controllers (or storage

processors) on the storage system.

Figure 1-3 shows the logical components of a direct-attached cluster

configuration.

Table 1-3. Supported Fibre Channel Module Configurations

Fibre Channel Switch Module Fibre Channel Pass-through Module

Network-attached configuration to one or

two supported Dell/EMC Fibre Channel

storage systems using embedded Fibre

Channel switch modules

Direct-attached configuration to a

Dell/EMC Fibre Channel storage system

Switch

-attached configuration to an

external SAN with up to four supported

Dell/EMC Fibre Channel storage systems

Switch

-attached connection to an

external SAN with up to four supported

Dell/EMC Fibre Channel storage

systems

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