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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.
SAN-Attached Cabling Example
The following figure shows a three-server, mixed HBA cabling configuration that uses two separate
switch fabrics to establish multiple paths to the storage array. Port-to-port connections in each switch
fabric/zone are detailed in the text boxes.
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