Dell AX4-5 - Manual (Page 16)

16 Introduction
Supported Cluster Configurations
The PowerEdge blade servers support both Fibre Channel and iSCSI cluster
configurations using either Fibre Channel mezzanine cards or Gigabit
Ethernet mezzanine cards to connect to the corresponding shared storage
system in either direct-attached or network-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.
Figure 1-3. Direct-Attached Cluster
public network
cluster node cluster node
pass-through module
private network
chassis connections
storage system
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