Dell EMC ECS D Series, Руководство по оборудованию

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Connecting ECS appliances in a single site
The ECS appliance management networks are connected together through the Nile
Area Network (NAN). The NAN is created by connecting either port 51 or 52 to
another turtle switch of another ECS appliance. Through these connections, nodes
from any segment can communicate to any other node in the NAN.
The simplest topology to connect the ECS appliances together does not require extra
switch hardware. All the turtle switches can be connected together in a linear or daisy
chain fashion.
Figure 56 Linear or daisy-chain topology
In this topology, if there is a loss of connectivity a split-brain can occur.
Figure 57 Linear or daisy-chain split-brain
For a more reliable network, the ends of the daisy chain topology can be connected
together to create a ring network. The ring topology is more stable because it would
require two cable link breaks in the topology for a split-brain to occur. The primary
drawback to the ring topology is that the RMM ports cannot be connected to the
customer network unless an external customer or aggregation switch is added to ring.
Figure 58 Ring topology
Network Cabling
96 D- and U-Series Hardware Guide