Looks like answer is not correct ?

[Sunil-Gidwani]

Timed Mode Set 1 – AWS Certified Solutions Architect Associate

47. QUESTION

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?

as per my understanding the General Purpose SSD (gp2) is incorrect because General Purpose is a type of SSD that can handle small, random I/O operations and question is not talking about needs of I/O-intensive database workloads

[TutorialsDojo-Support]

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

[Ryana]

First, you need to decide exactly what you want from your hard drive. SATA disks are good for high-capacity storage that does not require maximum performance. But if you want to get the most out of your disk subsystem, you should choose SAS. These are the main parameters you should pay attention to. Also, be sure to consider the reliability of your hard disk because data loss is not the worst thing you can do. Although many recovery specialists can quickly and efficiently restore all your files, it is better not to face this problem. I hope my comment will be useful to you. Best of luck!

[dDon]

Cost optimization is a basic principle of cloud computing, using Provisioned IOPS SSD will incur unnecessary increased cost for the organization, to save cost the organization can achieve same result by using General Purpose SSD – gp2 which is most suitable for workloads performing small, random I/O operations

Correct Answer = General Purpose SSD (gp2)