Exam 1z0-1072-20 topic 1 question 22 discussion

I believe that the Keyword here is "high I/O" thus Higher Performance is the best answer. Higher Performance: Recommended for workloads with the highest I/O requirements, requiring the best possible performance, such as large databases. This option provides the best linear performance scale with 75 IOPS/GB up to a maximum of 35,000 IOPS per volume. Throughput also scales at the highest rate at 600 KBPS/GB up to a maximum of 480 MBPS per volume. With this option you are purchasing 20 VPUs per GB/month. REF: https://docs.oracle.com/en-us/iaas/Content/Block/Concepts/blockvolumeelasticperformance.htm#Block_Volume_Elastic_Performance

B is correct

I THINK D Lower Cost: Recommended for throughput intensive workloads with large sequential I/O, such as streaming, log processing, and data warehouses. The cost is only the storage cost, there is no additional VPU cost. This option is only available for block volumes, it is not available for boot volumes. For more information, including specific throughput and IOPS performance numbers for various volume sizes

Correct answer is B

it's B

B option as by default balanced performance is enabled , and the user is looking for High I/o

I am not sure that the question is written correctly, if we have only performance in mind then yes you should go with "higher performance" option, if we have to consider the cost as well then I would agree with SADIO and go with "balanced performance".

The anser should be A: The Balanced elastic performance option provides a good balance between performance and cost savings for most workloads, including those that perform random I/O such as boot volumes. This option provides linear peformance scaling with 60 IOPS/GB up to 25,000 IOPS per volume. Throughtput scales at 480 KBPS/GB up to a maximum of 480 MBPS per volume. https://docs.cloud.oracle.com/en-us/iaas/Content/Block/Concepts/blockvolumeperformance.htm