Owner's Manual

Deployment Guide 21
NOTE: The cables are connected to the storage processor ports in sequential order for illustrative purposes.
While the available ports in your storage system may vary, HBA port 0 and HBA port 1 must be connected to SP-A
and SP-B, respectively.
Figure 1-6. Cabling the Cluster Nodes Direct-attached to a CX3-20 Storage System
Cabling Configurations in a SAN-Attached Environment
A SAN-attached cluster is a cluster configuration where all standalone servers or cluster nodes are
attached to a single storage system or to multiple storage systems through a SAN using a redundant
switch fabric.
SAN-attached cluster configurations provide more flexibility and more performance and are more
expandable than direct-attached configurations.
NOTE: The connections listed in this section are representative of one proven method of ensuring redundancy in
the connections between the cluster nodes and the storage system. Other methods that achieve the same type of
redundant connectivity may be acceptable.
The Stand-alone servers and cluster nodes attach to the storage system using a redundant switch fabric
and fiber optic cables with duplex LC multimode connectors.