Introduction 13
Figure 1-1. Direct-Attached, Single-Cluster Configuration
SAN-Attached Cluster
In a SAN-attached cluster, all nodes are attached to a single storage system or
to multiple storage systems through a SAN using redundant switch fabrics.
SAN-attached clusters are superior to direct-attached clusters in
configuration flexibility, expandability, and performance.
Figure 1-2 shows a SAN-attached cluster.
private network
public network
cluster node
Fibre Channel
connections
Fibre Channel
connections
cluster node
storage system
NOTE: The configuration can have up to 4 nodes. The nodes can be:
• One cluster (up to 4 nodes)
• Two two-node clusters
• One cluster and stand-alone server(s)
book.book Page 13 Monday, July 25, 2011 3:18 PM
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