
Introduction 17
Figure 1-3. Direct-Attached Cluster
Switch-Attached Cluster
Switch
-attached clusters provide configuration flexibility, expandability, and
performance. In a
switch
-attached cluster, all of the nodes (server modules)
are attached to redundant switch fabrics. A
switch
-attached cluster supports
the following configurations:
• Up to two storage systems using embedded fibre channel switch modules
without external fibre channel switches
• Up to four storage systems using Ethernet switch modules, or embedded
fibre channel (switch or pass-through) modules connected to external fibre
channel switches
Figure 1-4 shows the switch-attached cluster connected to an external SAN
using switch modules.
Figure 1-5 shows the switch-attached cluster connected to an external SAN
using embedded pass-through modules.
Figure 1-6 shows the switch-attached cluster connected to an external SAN
using embedded switch modules.
NOTE: Figure 1-4 through Figure 1-6 are for illustration only. Some cluster connections
shown below are routed internally through the PowerEdge server enclosure.
public network
cluster node
cluster node
pass-through module
private network
chassis connections
storage system
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