A StorageGRID installation is using two sites with multiple SG1100 services appliances for client access. DNS Round Robin is configured to evenly distribute the traffic to all services appliances.
What increases the throughput for client operations?
A.
Add one more SG1100 appliance.
B.
Replace an SG1100 appliance with an SGF6112 appliance as a caching load balancer.
C.
Add a second Admin Node.
D.
Replace an SG1100 appliance with an SG110 appliance.
Adding another SG1100 services appliance increases aggregate client throughput because each SG1100 can operate as a Gateway Node running the StorageGRID Load Balancer service. With DNS Round Robin, client connections are distributed across the available services appliances, allowing the aggregate load-balancing capacity to scale horizontally. NetApp explicitly identifies increased aggregate throughput and no idle hosts as advantages of the DNS Round Robin load-balancing model.
The SG1100 is specifically designed to provide high-performance Gateway Node and Admin Node services and supports high-speed network connectivity up to 100 GbE. Adding another equivalent SG1100 therefore provides additional processing and network capacity while preserving consistent performance characteristics across the load-balancer pool. NetApp cautions against mixing services appliances with substantially different performance levels when balancing client traffic.
Option B is incorrect because the SGF6112 is a Storage Node appliance, while StorageGRID load-balancer caching is available only on Gateway Nodes. Option C does not provide the same intended horizontal client-throughput expansion. Option D would substitute an SG110, a lower-performance services appliance, and could create inconsistent load-balancing performance.
Therefore, A is the correct answer.
Reference topics: StorageGRID Load Balancing → DNS Round Robin → SG1100 Services Appliances → Gateway Nodes → Aggregate Client Throughput
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