AWS Certified SAP on AWS – Specialty (PAS-C01) — Question 46

A company is planning to migrate its on-premises SAP ERP Central Component (SAP ECC) system on SAP HANA to AWS. Each month, the system experiences two peaks in usage. The first peak is on the 21st day of the month when the company runs payroll. The second peak is on the last day of the month when the company processes and exports credit data. Both peak workloads are of high importance and cannot be rescheduled.
The current SAP ECC system has six application servers, all of a similar size. During normal operation outside of peak usage, four application servers would suffice.
Which purchasing option will meet the company’s requirements MOST cost-effectively on AWS?

Answer options

Correct answer: D

Explanation

The correct answer is D because it allows the company to maintain four Reserved Instances for normal operation and utilize two On-Demand Instances during peak times, which is cost-effective. Option A is less desirable as Spot Instances can be terminated unexpectedly, which is risky for critical workloads. Option B is not economical since it requires paying for six On-Demand Instances all the time, and option C commits to six Reserved Instances, which is unnecessary outside of peak times.