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Difficulty: MediumAWS Storage Services

A financial technology company is setting up a new application environment on AWS and has the following storage requirements:

* A persistent, low-latency block storage volume to host a transaction database running on an Amazon EC2 instance.
* An archival storage solution for historical transaction logs that must be kept for 77 years for regulatory compliance, where retrieval times of 33 to 55 hours are acceptable.

Which two AWS storage services or tiers should the company select to meet these requirements? (Select TWO.)

  1. Amazon Elastic Block Store (Amazon EBS)Answer
  2. Amazon Simple Storage Service (Amazon S3) Glacier Flexible RetrievalAnswer
  3. C
    Amazon Elastic File System (Amazon EFS)
  4. D
    Amazon EC2 Instance Store
  5. E
    Amazon Simple Storage Service (Amazon S3) Standard

Answer

The company should select Amazon Elastic Block Store (Amazon EBS) for the database and Amazon Simple Storage Service (Amazon S3) Glacier Flexible Retrieval for the archival logs.
Amazon Elastic Block Store (Amazon EBS) is the ideal choice for EC2 database storage because it offers persistent, high-performance block storage volumes. Amazon Simple Storage Service (Amazon S3) Glacier Flexible Retrieval is the most cost-effective option for archiving logs for 77 years since it is designed for infrequently accessed archives and supports retrieval within 33 to 55 hours.

Step-by-Step Solution

1
Identify the storage requirements for the database volume.
A transaction database on Amazon EC2 requires persistent, low-latency, block-level storage.
Only block-level storage attached to the EC2 instance can provide the low-latency and performance needed for database operations.
2
Determine the best AWS service for the database volume.
Amazon Elastic Block Store (Amazon EBS) is the correct service.
Amazon EBS provides block-level volumes that persist independently of the EC2 instance lifetime, unlike ephemeral Instance Store volumes.
3
Identify the storage requirements for the compliance logs.
Archival logs require a long-term (77 years), cost-effective storage class with retrieval times of 33 to 55 hours.
Archival data is rarely accessed, so cost optimization is the primary driver, and the requested retrieval window allows for asynchronous retrieval options.
4
Determine the best AWS storage tier for the compliance logs.
Amazon Simple Storage Service (Amazon S3) Glacier Flexible Retrieval is the correct tier.
S3 Glacier Flexible Retrieval offers extremely low-cost archive storage with standard retrieval times of 33 to 55 hours.

Key Concept

AWS Storage Services (EBS vs. S3 Glacier)
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Topics

AWS Storage Services

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