1Z0-1072-25 Question 196
Single answerYour organization runs a monthly data analytics workload on an OCI Compute instance with attached Block Volumes. This workload requires low latency and high throughput for about two days each month, with significantly lighter activity at other times. You also need to control overall storage costs. Which strategy provides the best balance of cost efficiency and performance?
- A
Keep the Block Volume on Ultra High Performance tier at all times to ensure maximum performance.
- B
Start on the Balanced tier, then switch to the Higher Performance tier during the monthly analytics job, and revert to Balanced afterwards.
- C
Use the Lower Cost tier for the entire month to minimize storage costs.
- D
Provision an Ultra High Performance Block Volume for each analytics cycle, detach and delete it after the job concludes, and repeat each month.
Show answer and explanation
Correct answer: B
Explanation
OCI Block Volume performance tiers � Lower Cost, Balanced, Higher Performance, and Ultra High Performance � provide flexible options to match performance needs. You can dynamically switch an existing volume� performance tier to address temporary spikes without incurring high costs when intensive workloads subside. The official OCI documentation recommends leveraging this feature to optimize both cost and performance (see Oracle Cloud Infrastructure Block Volume Performance Tiers documentation).
- A. Incorrect.
Option 1: Keeping the volume on Ultra High Performance continuously guarantees high performance but at a significantly higher cost. Since the workload is not consistently heavy, paying for the top tier 24/7 is unnecessary and expensive, making this strategy suboptimal.
- B. Correct.
Option 2 (Correct): Oracle Cloud Infrastructure allows switching performance tiers on existing Block Volumes. Using Balanced by default keeps costs down during normal or lighter workloads. Switching temporarily to Higher Performance for the monthly analytic burst provides additional IOPS and throughput when needed, and reverting to Balanced afterward keeps costs in check.
- C. Incorrect.
Option 3: The Lower Cost tier is the least expensive option but provides the lowest performance profile. Although it minimizes spend, it does not offer the throughput or low latency demanded by the intense monthly analytics job, risking job failures or significant slowdowns.
- D. Incorrect.
Option 4: Deleting and recreating a Block Volume every month at Ultra High Performance could offer the needed performance during peak periods. However, the frequent creation and deletion, data migration, and administrative overhead make this solution impractical. Regularly changing the volume tier is simpler and more efficient.