Deployment Guide

removed cable, failed HBA, or failed or removed RAID controller module results in loss of host access to the
storage array.
Redundant configurations establish separate data paths between the host server(s) and storage array. Each
path is connected to separate RAID controller modules in the storage array. Redundancy protects the host
server(s) from losing access to data in the event of a path failure since both RAID controller modules can
independently access all the physical disks in the storage array.
SAN-Attached Cabling
SAN-attached cabling configurations provide the highest level of redundancy and alternate-path connectivity
between the host server and storage array. A SAN configuration using a Fibre Channel compatible switch fabric
allows you to establish multiple redundant paths to data on the storage array.
NOTE: A SAN configuration using a supported Fibre Channel switch hardware is required if the Remote
Replication premium feature is activated on the storage array. For specific cabling requirements for
Remote Replication, see Remote Replication Cabling Example.
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