1Z0-1072-25 Question 194
Single answerYour team runs a mission-critical database workload on OCI that experiences elevated I/O requirements at peak business hours. You have been using the Balanced performance tier for your block volumes, but recent spikes in usage have caused latency issues. Management wants to resolve the performance bottleneck without incurring the highest possible costs. Which Block Volume performance tier should you switch to in order to address these concerns?
- A
Basic Performance tier
- B
Balanced Performance tier
- C
Higher Performance tier
- D
Ultra High Performance tier
Show answer and explanation
Correct answer: C
Explanation
OCI Block Volume allows you to choose among multiple performance tiers�Basic, Balanced, Higher Performance, and Ultra High Performance�so you can align performance and cost with your workload needs. Basic is the most cost-efficient but offers the lowest I/O capabilities; Balanced provides a moderate mix of cost and performance; Higher Performance is ideal for production workloads that require consistently higher I/O without incurring the costs of Ultra High Performance. Ultra High Performance is reserved for the most demanding workloads, such as HPC or extremely high-volume database operations. Refer to the OCI documentation on Block Volume performance tiers for official guidelines and best practices.
- A. Incorrect.
Option 1 (Basic Performance tier) is incorrect because it offers lower IOPS and throughput at the lowest cost. It would not resolve the performance bottleneck you are currently experiencing and is more suitable for infrequent or lower-intensity workloads.
- B. Incorrect.
Option 2 (Balanced Performance tier) is incorrect because you are already using this tier. While it provides a reasonable blend of cost and performance, it isn�t sufficient for your peak I/O demands, leading to latency issues.
- C. Correct.
Option 3 (Higher Performance tier) is correct because it delivers higher IOPS and throughput levels compared to Balanced, while keeping costs lower than the Ultra High Performance tier. This tier is well-suited for production environments where consistent performance is needed without the expense of the highest tier.
- D. Incorrect.
Option 4 (Ultra High Performance tier) is incorrect (though tempting) because it guarantees the highest provisioned IOPS and throughput, but at a significantly greater cost. For this scenario, where management wants to improve performance without incurring the highest possible expense, Higher Performance tier is the more suitable choice.