Question

An organization has archived all their data to Amazon S3 Glacier for a long term. However, the organization needs to retrieve some portion of the archived data regularly. This retrieval  process is quite random and incurs a good amount of cost for the organization. As expense is the top priority, the organization wants to set a data retrieval policy to avoid any data retrieval charges.

Which one of the following retrieval policies suits this in the best way?

A. No Retrieval Limit

B. Free Tier Only

C. Max Retrieval Rate

D. Standard Retrieval

Answer 1

B. Free Tier Only

Explanation

Option A is incorrect because No Retrieval Limit, the default data retrieval policy, is used when you do not want to set any retrieval quota. All valid data retrieval requests are accepted. This retrieval policy incurs a high cost to your AWS account for each region.

Option B is CORRECT because using a Free Tier Only policy, you can keep your retrievals within your daily AWS Free Tier allowance and not incur any data retrieval costs. And in this policy, S3 Glacier synchronously rejects retrieval requests that exceed your AWS Free Tier allowance.

Option C is incorrect because you use Max Retrieval Rate policy when you want to retrieve more data than what is in your AWS Free Tier allowance. Max Retrieval Rate policy sets a bytes-per-hour retrieval-rate quota. The Max Retrieval Rate policy ensures that the peak retrieval rate from all retrieval jobs across your account in an AWS Region does not exceed the bytes-per-hour quota that you set. Max Retrieval rate policy is not in the free tier.

Option D is incorrect because Standard Retrieval is a process of data retrieval from S3 Glacier that takes around 12 hours to retrieve data. This retrieval type is chargeable and incurs costs on the AWS account per region wise.