CCSP · Question #305
A loosely coupled storage cluster will have performance and capacity limitations based on the ____________. Response:
The correct answer is D. The performance and capacity in each node. A loosely coupled storage cluster's overall performance and capacity are ultimately constrained by the individual performance and capacity limitations of each node within the cluster.
Question
A loosely coupled storage cluster will have performance and capacity limitations based on the ____________. Response:
Options
- APhysical backplane connecting it
- BTotal number of nodes in the cluster
- CAmount of usage demanded
- DThe performance and capacity in each node
How the community answered
(60 responses)- A7% (4)
- B3% (2)
- C2% (1)
- D88% (53)
Why each option
A loosely coupled storage cluster's overall performance and capacity are ultimately constrained by the individual performance and capacity limitations of each node within the cluster.
A physical backplane is more relevant to tightly coupled systems or chassis-based designs, and while important for internal communication, it is not the primary limitation for a loosely coupled cluster where nodes communicate over a network.
While the total number of nodes in the cluster contributes to the aggregate capacity and potential performance, it is the performance and capacity of each individual node that directly defines the limits of what each node can contribute and thus the overall system's capabilities.
The amount of usage demanded describes the workload placed on the system, not the inherent architectural limitation of the cluster's performance or capacity itself.
In a loosely coupled storage cluster, the aggregate performance (e.g., IOPS, throughput) and total capacity are fundamentally limited by the resources and capabilities of each individual node. The overall system cannot exceed the sum of the performance and capacity contributed by its constituent nodes.
Concept tested: Loosely coupled storage cluster characteristics
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