Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 127 discussion

Max instance store possible at this time is 30TB for NVMe which has the higher I/O compared to EBS. is4gen.8xlarge 4 x 7,500 GB (30 TB) NVMe SSD https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html#instance-store-volumes

The correct Answer is A : Amazon EC2 instance store (Instance Store) is usually not the best choice because the storage it provides is temporary and tied to the life cycle of the instance. When an instance is stopped or terminated, data on the instance store is lost. In this scenario, the company's requirements were to have the maximum possible I/O performance and required durable data storage. Therefore, using Amazon EC2 Instance Store does not meet these requirements because it lacks durability. In contrast, Amazon EBS (Elastic Block Store) provides persistent regional block storage and can meet the needs of high-performance I/O. Therefore, the answer should include Amazon EBS, not Amazon EC2 instance storage.

Ans A - ideally suits situation since its media, fast access and long-term storage... ": EBS for maximum performance, S3 for durable data storage, and S3 Glacier for archival storage."

A. EC2 Instance store is used mainly for temp data like caching, memory for computation etc

A is correct answer. ask for copilot as well

I think it is A, because even D to comply the requirements it is a temporary storage and it is not the best choice.

https://repost.aws/questions/QUHCySI6otStqGftOFHhHeOQ/saa-c03-question

Although the EC2 instance store is ephemeral, it provides the highest performance, and there is no demand of a presistant data storage for video processing, the best option for storing media is s3, which is an object storage system.

Correct Answer: A. Amazon EBS for maximum performance, Amazon S3 for durable data storage, and Amazon S3 Glacier for archival storage Explanation: Amazon EBS for maximum performance: Amazon EBS (Elastic Block Store) provides high-performance block storage for use with Amazon EC2. It is well-suited for workloads requiring high I/O performance, such as video processing. Amazon S3 for durable data storage: Amazon S3 (Simple Storage Service) offers highly durable and scalable object storage. It is ideal for storing large amounts of media content with high durability. Amazon S3 Glacier for archival storage: Amazon S3 Glacier is a low-cost storage service for data archiving and long-term backup. It is perfect for storing archival media that is not frequently accessed but needs to be preserved.

the correct answer is A, max 10TB storage need per instance (not instances)

A for sure

Amazon EBS (Elastic Block Store): Provides high I/O performance suitable for video processing tasks. Amazon S3 (Simple Storage Service): Offers very durable and scalable storage, ideal for storing large amounts of media content. Amazon EFS (Elastic File System): While it provides scalable and durable storage, it is optimized for file-based workloads rather than object storage, which is less suitable for large-scale media storage

The best option for the given requirements would be: A. Amazon EBS for maximum performance, Amazon S3 for durable data storage, and Amazon S3 Glacier for archival storage. Explanation: Amazon EBS for maximum performance: Amazon Elastic Block Store (EBS) provides high-performance block storage volumes for use with Amazon EC2 instances. This is suitable for the 10 TB of storage with maximum possible I/O performance required for video processing. Amazon S3 for durable data storage: Amazon Simple Storage Service (S3) is highly durable, scalable, and secure object storage. It's suitable for the 300 TB of very durable storage needed for storing media content. Amazon S3 Glacier for archival storage: Amazon S3 Glacier provides secure, durable, and low-cost storage for data archiving and long-term backup. It's ideal for the 900 TB of storage required for archival media that is not in use anymore.

the answer is D From a maximum I/O perspective, Amazon EBS is significantly better than Amazon EC2 instance store for two main reasons: 1. Underlying Storage Technology: Amazon EBS: Utilizes Solid State Drives (SSDs) and NVMe storage options, offering high-performance IOPS (Input/Output Operations Per Second) and throughput. Amazon EC2 Instance Store: Relies on the local hard disk drives (HDDs) attached to the EC2 instance, which have significantly lower IOPS and throughput compared to SSDs.

Instance store is more than 10T

A sounds good but D is better as the store is physically attached to the instance!

D - I chose A. But its a trick question. Upon reading Pentium75's Comment, I agree it should be D. However, I would feel more confident if it mentioned "temporary 10Gb" in the question...