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There is a requirement to host a database server for a minimum period of one year. Which of the following would result in the least cost?
A
Spot Instances
B
On-Demand
C
No Upfront costs Reserved
D
Partial Upfront costs Reserved
Explanation:
For a database server that needs to run for a minimum of one year, Partial Upfront Reserved Instances provide the best cost optimization.
Spot Instances: Cheapest option but can be terminated at any time - not suitable for databases that require continuous availability
On-Demand: Most expensive option with no long-term commitment
No Upfront Reserved: Lower hourly rate than On-Demand but higher than Partial Upfront
Partial Upfront Reserved: Provides the best discount among reserved instances options for one-year commitments
Higher discount: AWS offers better pricing for partial upfront payments compared to no upfront
Predictable costs: Fixed hourly rate for the entire term
Suitable for long-term workloads: Perfect for databases that run continuously for extended periods
For workloads with predictable usage patterns lasting one year or more, Reserved Instances with partial upfront payment offer the most cost-effective solution while ensuring resource availability.