Which Amazon EC2 pricing model provides the MOST cost savings for an always-up, right-sized database server running for a project that will last 1 year?
Which Amazon EC2 pricing model provides the MOST cost savings for an always-up, right-sized database server running for a project that will last 1 year?
For an always-up, right-sized database server running for a project that will last 1 year, the most cost-effective Amazon EC2 pricing model is Standard Reserved Instances. These instances provide significant cost savings over On-Demand Instances because they offer a discounted hourly rate in exchange for committing to a one- or three-year term. Since the project duration is specified as 1 year and the server requirements are expected to remain constant (“right-sized”), the flexibility of Convertible Reserved Instances is not necessary, making Standard Reserved Instances the most cost-saving option.
Crazy how correct answers are not being provided by this platform which are charging an absolute arm and a leg for this service ;(
Correct answer D
D. Standard Reserved Instances
I think its D. Key word is the MOST cost savings. Standard Reserved Instance will save you more than Convertible.
For an always-up, right-sized database server running for a project that will last 1 year, the pricing model that provides the MOST cost savings is: B. Convertible Reserved Instances Convertible Reserved Instances provide more flexibility to change the attributes of the Reserved Instances during the term, offering potential savings if the requirements change over time.
I think it is D, because it says right-sized, meaning that most probably the instance will not change and we need more cost effective. Thus, standard Reserved Instances
There is no need to modify in the question, so standard reserved instances are the most cost savings. https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/reserved-instances-types.html
https://docs.aws.amazon.com/whitepapers/latest/cost-optimization-reservation-models/standard-vs.-convertible-offering-classes.html
I believe the Convertible Reserved instance is a better option because the key word is "right-sized". If you choose a Standard Reserved instance, you cannot change it and may be paying for more resources than you need. Whereas, with Convertible instances, you can start small and scale up if needed.
From the docs: Standard Reserved Instance enables you to modify Availability Zone, scope, networking type, and instance size (within the same instance type) of your Reserved Instance. Convertible Reserved Instance enables you to exchange one or more Convertible Reserved Instances for another Convertible Reserved Instance with a different configuration, including instance family, operating system, and tenancy.
D. Standard Reserved Instances Reserved Instances offer significant cost savings compared to On-Demand Instances, especially for workloads that are expected to run continuously for a long duration, such as a database server for a 1-year project. Standard Reserved Instances provide a discount on the hourly charge for the instance compared to On-Demand pricing, in exchange for committing to a one- or three-year term. Convertible Reserved Instances offer similar savings but provide more flexibility to change the instance type, operating system, or tenancy during the term. However, they may have a slightly higher cost compared to Standard Reserved Instances due to this flexibility.
B. Convertible Reserved Instances Convertible Reserved Instances provide the most cost savings for an always-up, right-sized database server running for a project that will last 1 year. Convertible Reserved Instances offer significant cost savings compared to On-Demand Instances, and they provide flexibility by allowing you to change the instance type if your needs change during the term.
I will agree with others who have answered ( D ) as correct answer. To achieve Most Cost Saving, Standard Reserved Instance (D) is the correct answer. to achieve greater flexibility than (B) Convertible Reserved Instances is better. long story short. (D) is correct option for this question.
Standard Reserved Instances typically provide the highest discount levels.