When implementing a full mesh topology in a Fibre Channel (FC) SAN environment, what is the effect when there is an increase in the number of switches?
A.
Reduces the available node ports for ISL connectivity.
B.
Increases the load on the ISLs due to traffic aggregation.
C.
Increases the hop count for compute to storage traffic.
D.
Reduces the available switch ports for node connectivity.
Answer D
"5.10.1 Mesh Topology
A mesh topology may be one of the two types: full mesh or partial mesh.
In a full mesh, every switch is connected to every other switch in the topology. A full mesh topology may be appropriate when the number of switches involved is small. A typical deployment would involve up to four switches or directors, with each of them servicing highly localized host-to-storage traffic. In a full mesh topology, a maximum of one ISL or hop is required for host-to-storage traffic. However, with the increase in the number of switches, the number of switch ports used for ISL also increases. <<This reduces the available switch ports for node connectivity.>>"
Information Storage and Management . Wiley. Kindle Edition.
In a full mesh, every switch is connected to every other switch in the topology. A full mesh topology may be appropriate when the number of switches that are involved is small. A typical deployment would involve up to four switches or directors, with each of them servicing highly localized compute-to-storage traffic. In a full mesh topology, a maximum of one ISL or hop is required for compute-tostorage traffic. However, with the increase in the number of switches, the number of switch ports that are used for ISL also increases. This process reduces the available switch ports for node connectivity. - D correct
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