PAS-C01 Design of SAP Workloads on AWS Practice Question
An SAP customer wants to reduce the cost of running a non-production SAP system on AWS. The system is used only during business hours (8 AM to 6 PM) on weekdays. What is the most cost-effective solution?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Instance Scheduler to stop instances outside business hours.
Using AWS Instance Scheduler allows you to automatically stop instances outside business hours, reducing costs significantly for systems used only during specific times. Option A is incorrect because Reserved Instances are best for steady-state usage and would still incur costs for hours when the system is not needed. Option B is incorrect because Compute Savings Plans also require consistent usage to be cost-effective and do not eliminate charges for idle hours. Option C is incorrect because running On-Demand instances without scheduling does not reduce costs, as you pay for every hour regardless of usage.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Purchase Reserved Instances for 1-year term.
Why it's wrong here
Reserved Instances require payment regardless of usage.
- ✗
Purchase Compute Savings Plans for 3-year term.
Why it's wrong here
Savings Plans are for consistent usage, not for intermittent workloads.
- ✗
Run the instances as On-Demand without any schedule.
Why it's wrong here
No cost savings without stopping.
- ✓
Use AWS Instance Scheduler to stop instances outside business hours.
Why this is correct
Instance Scheduler automates shutdown, saving costs.
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