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Elastic Block Store Quiz

47,093

An application with a 150 GB relational database runs on an EC2 Instance. This application will be used frequently with a high database reads and writes requests. What is the most cost-effective storage typefor this application?

A. Amazon EBS Provisioned IOPS SSD

B. Amazon EBS Throughput Optimized HDD

C. Amazon EBS General Purpose SSD

D. Amazon EFS

A. Amazon EBS Provisioned IOPS SSD
The question is focusing on the most cost effective storage option for the application. As per AWS documentation Provisioned IOPS (SSD) are used for applications that require high Inputs/Outputs Operations per sec and is mainly used in large databases such as Mongo, Cassandra, Microsoft SQL Server, MySQL, PostgreSQL, Oracle where as Throughput optimized HDD although it is cheaper compared to PIOPS is used for dataware houses where it is designed to work with throughput intensive workloads such as big data, log processing etc.So Option A is the right choice for this case.
AWS Documentation mentions the following:
Provisioned IOPS SSD (io1) volumes are designed to meet the needs of I/O-intensive workloads, particularly database workloads that are sensitive to storage performance and consistency.
For more information on AWS EBS Volumes, please visit the following URL:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumes.htmlNote:The question also states that the application will be frequently used for heavy read and write operations. So in that case General Purpose SSD won’t be able to handle that workload. Hence option A seems to be the right choice.

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