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The following figure is an example of the storage system ES1640dc and expansion enclosure EJ1600:
As shown in the above figure, the cabling method used to connect expansion units creates a redundant-
cross loop configuration. This provides the expansion units with redundant paths to the base ES NAS.
Moreover, system failover protection includes protection of JBOD connection failure to provide an extra
layer of protection. (Please refer to the High Availability app of QES.) With these two protection
methods, when one or multiple paths to the ES NAS disconnect, the expansion units are still able
to communicate with the base ES NAS.
The following procedure describes the steps required to attach an expansion enclosure to a base ES NAS.
Expansion
IN PORT OUT PORT
Expansion
IN PORT OUT PORT
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