EBS – SSD vs HDD

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.

In the exam, always consider the difference between SSD and HDD as shown on the table below. This will allow you to easily eliminate specific EBS-types in the options which are not SSD or not HDD, depending on whether the question asks for a storage type which has small, random I/O operations or large, sequential I/O operations.

IT Certification Category (English)728x90

 

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. Unlike gp2, which uses a bucket and credit model to calculate performance, an io1 volume allows you to specify a consistent IOPS rate when you create the volume, and Amazon EBS delivers within 10 percent of the provisioned IOPS performance 99.9 percent of the time over a given year.

***

AWS Certifications are consistently among the top paying IT certifications in the world, considering that Amazon Web Services is the leading cloud services platform with almost 50% market share! Earn over $150,000 per year with an AWS certification!

Subscribe to our newsletter and notifications for more helpful AWS cheat sheets and study guides like this and answer as many AWS practice exams as you can.🙂

NEW eBook – Solutions Architect Associate Exam Study Guide and Cheat Sheets

AWS Certified Solutions Architect Associate eBook version2

NEW Course – AWS Certified Security Specialty Practice Exams 2020

AWS Certified Security - Specialty Exam Study Path

Enroll Now – AWS Certified Cloud Practitioner Practice Exams 2020

AWS Certified Cloud Practitioner New

Enroll Now – AWS Certified Solutions Architect Associate Practice Exams 2020

AWS Certified Solutions Architect Associate Practice Exams New

Enroll Now – AWS Certified Developer Associate Practice Exams 2020

AWS Certified Developer Associate New

Enroll Now – AWS Certified SysOps Administrator Associate Practice Exams 2020

AWS Certified SysOps Administrator Associate New

Enroll Now – AWS Certified Solutions Architect Professional Practice Exams 2020

AWS Certified Solutions Architect Professional New

Enroll Now – AWS Certified DevOps Engineer Professional Practice Exams 2020

AWS Certified DevOps Engineer Professional Practice Exams New

Browse Other Courses

Generic Category (English)300x250

Recent Posts