Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 353 discussion

RDS does not support IO2 or IO2express . GP2 can do the required IOPS RDS supported Storage > https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Storage.html GP2 max IOPS > https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/general-purpose.html#gp2-performance

RDS now supports io2 but it might still be an overkill given Gp2 is enough and we are looking for the most cost effective solution.

gp2: 1,000 GiB => 3000 Baseline performance (IOPS) match the requirement which is 2000 only Baseline IOPS performance : 100 ~16,000 at a rate of 3 IOPS per GiB of volume size.

RDS does not support IO2 or IO2express . GP2 can do the required IOPS

The Options is A only because it is sufficient.. Provisioned IOPS are available but overkill.. just want to make sure we understand why its A for the right reason

Simplified by Almero - thanks. RDS does not support IO2 or IO2express . GP2 can do the required IOPS

I tried on the portal and only gp3 and i01 are supported. This is 11 May 2023.

A Amazon RDS supports the use of Amazon EBS Provisioned IOPS (io2) volumes. When creating a new DB instance or modifying an existing one, you can select the io2 volume type and specify the amount of IOPS and storage capacity required. RDS also supports the newer io2 Block Express volumes, which can deliver even higher performance for mission-critical database workloads.

he most cost-effective solution that meets the requirements is to use a Multi-AZ deployment of an Amazon RDS for MySQL DB instance with a General Purpose SSD (gp2) EBS volume. This solution will provide high availability and fault tolerance while minimizing disruptions and stabilizing performance. The gp2 EBS volume can handle up to 16,000 IOPS. You can also scale up to 64 TiB of storage. Amazon RDS for MySQL provides automated backups, software patching, and automatic host replacement. It also provides Multi-AZ deployments that automatically replicate data to a standby instance in another Availability Zone. This ensures that data is always available even in the event of a failure.

RDS does not support io2 !!!

B:gp3 would be the better option, but considering we have only gp2 option and such storage volume - gp2 will be the right choice

I thought the answer here is A. But when I found the link from Amazon website; as per AWS: Amazon RDS provides three storage types: General Purpose SSD (also known as gp2 and gp3), Provisioned IOPS SSD (also known as io1), and magnetic (also known as standard). They differ in performance characteristics and price, which means that you can tailor your storage performance and cost to the needs of your database workload. You can create MySQL, MariaDB, Oracle, and PostgreSQL RDS DB instances with up to 64 tebibytes (TiB) of storage. You can create SQL Server RDS DB instances with up to 16 TiB of storage. For this amount of storage, use the Provisioned IOPS SSD and General Purpose SSD storage types. https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Storage.html

for DB instances between 1 TiB and 4 TiB, storage is striped across four Amazon EBS volumes providing burst performance of up to 12,000 IOPS. from "https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Storage.html"

https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Storage.html Amazon RDS provides three storage types: General Purpose SSD (also known as gp2 and gp3), Provisioned IOPS SSD (also known as io1), and magnetic (also known as standard) B - MOST cost-effectively

The baseline IOPS performance of gp2 volumes is 3 IOPS per GB, which means that a 1 TB gp2 volume will have a baseline performance of 3,000 IOPS. However, the volume can also burst up to 16,000 IOPS for short periods, but this burst performance is limited and may not be sustained for long durations. So, I am more prefer option A.

Option A is the correct answer. A Multi-AZ deployment provides high availability and fault tolerance by automatically replicating data to a standby instance in a different Availability Zone. This allows for seamless failover in the event of a primary instance failure. Using an io2 Block Express EBS volume provides the needed IOPS performance and capacity for the database. It is also designed for low latency and high durability, which makes it a good choice for a database tier.

Correction - hit wrong answer button - meant 'B' Amazon RDS provides three storage types: General Purpose SSD (also known as gp2 and gp3), Provisioned IOPS SSD (also known as io1) https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Storage.html