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Hi Sunil-Gidwani,
Thank you for your feedback.
You are building a new data analytics application in AWS which will be deployed in an Auto Scaling group of On-Demand EC2 instances and a MongoDB database. It is expected that the database will have high-throughput workloads performing small, random I/O operations. As the Solutions Architect, you are required to properly set up and launch the required resources in AWS. Which of the following is the most suitable EBS type to use for your database?
General Purpose SSD (gp2)
Provisioned IOPS SSD (io1) — > correct answer
Throughput Optimized HDD (st1)
Cold HDD (sc1)
On a given volume configuration, certain I/O characteristics drive the performance behavior for your EBS volumes. SSD-backed volumes, such as General Purpose SSD (gp2) and Provisioned IOPS SSD (io1), deliver consistent performance whether an I/O operation is random or sequential. HDD-backed volumes like Throughput Optimized HDD (st1) and Cold HDD (sc1) deliver optimal performance only when I/O operations are large and sequential.
This question asks for which EBS volume type are you going to use for the database which has a high-throughput workloads performing small, random I/O operations. 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.
You can view more EBS details here.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-volume-types.html
Hope this helps.
Regards,
Kenneth Samonte @ Tutorials Dojo
