AWS Certified Solutions Architect - Associate
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A company is planning to migrate a commercial off-the-shelf application from its on-premises data center to AWS. The software has a software licensing model using sockets and cores with predictable capacity and uptime requirements. The company wants to use its existing licenses, which were purchased earlier this year. Which Amazon EC2 pricing option is the MOST cost-effective?
Other
Community
UAnonymous
A
Dedicated Reserved Hosts
B
Dedicated On-Demand Hosts
C
Dedicated Reserved Instances
D
Dedicated On-Demand Instances
Explanation:
Explanation
Correct Answer: A. Dedicated Reserved Hosts
Key Factors in This Scenario:
- Software Licensing Model: The application uses socket and core-based licensing, which is tied to physical hardware specifications.
- Existing Licenses: The company wants to use licenses purchased earlier this year, which are typically bound to specific hardware configurations.
- Predictable Capacity and Uptime Requirements: The workload has steady, predictable usage patterns.
Why Dedicated Reserved Hosts is the Best Choice:
- Physical Server Isolation: Dedicated Hosts provide physical servers dedicated to a single customer, which is essential for software licensing models that track sockets and cores.
- License Mobility: AWS Dedicated Hosts allow you to use your existing server-bound software licenses, including those with socket/core-based licensing.
- Cost Optimization: By reserving Dedicated Hosts for 1 or 3 years, you get significant cost savings (up to 70% off On-Demand pricing) while meeting the predictable capacity requirements.
- Compliance with Licensing Terms: Many commercial software vendors require dedicated physical hardware for their licensing models, which Dedicated Hosts provide.
Why Other Options Are Less Suitable:
- B. Dedicated On-Demand Hosts: While providing physical isolation, On-Demand pricing is more expensive than Reserved pricing for predictable workloads.
- C. Dedicated Reserved Instances: Dedicated Instances run on hardware dedicated to a single customer but may be moved between different physical hosts, which could violate socket/core licensing requirements.
- D. Dedicated On-Demand Instances: Similar to option C, but with higher costs due to On-Demand pricing.
Additional Considerations:
- Dedicated Hosts give you visibility into the number of sockets and physical cores, which is crucial for compliance with socket/core-based licensing.
- Reserved Hosts provide capacity reservation, ensuring your dedicated hardware is available when needed.
- The combination of dedicated physical hardware with reserved pricing offers the best balance of licensing compliance and cost-effectiveness for this scenario.
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