AWS 100 Days: Day 15 Optimize Costs with S3 Storage Classes.
Welcome to Day 16! It is not only that Amazon S3 is built to scale and survive, but it is also built to be economical. The secret to cost optimization in S3 is to align your access patterns of data with the appropriate S3 Storage Class.
The Question
A company stores important documents in S3. These files are accessed frequently for the first 30 days, then very rarely. However, when needed, they must be retrieved in seconds.
To save costs, which S3 Storage Class is the best fit for these documents after the initial 30-day period?
The Correct Answer
The right solution is (C) S3 Standard-IA (Infrequent Access).
Reason It is Right: Why Pay Less when You Touch Data Infrequently.
S3 Standard-IA is designed to support data that is long-lived and rarely accessed, but needs to be available in milliseconds when it is required.
It works on a simple trade-off:
Your price per-GB of storage is reduced than S3 Standard.
You are charged a little per-GB retrieval fee to access the data.
This is why it is the ideal place where the documents would be kept in our case once they are no longer required on regular basis. The first 30 days would be S3 Standard and after that they will be automatically changed to S3 Standard-IA to save on the budget.
S3 Lifecycle Policies Automation.
What is your automatic movement of data? You use an S3 Lifecycle Policy. This is a collection of rules that you can develop on a bucket to automatically move objects to a new storage class (or to delete them) after some time. An example is: 30 days later transfer all the items in this bucket out of S3 Standard into S3 Standard-IA.
Discussion of the False Choices.
(A) S3 Standard: This is the default storage, which is used in frequently accessed data. Sustaining the documents after 30 days at this place would not be economical.
(B) S3 Intelligent-Tiering: This is a very good type of storage where the access may be unknown or may increase or decrease. It does automatic transfers between common and rare read tiers. Although it would also most likely do the same, the particular name of the tier that is created to work with infrequent access is S3 Standard-IA, so it is the most appropriate answer.
(D) S3 Glacier Deep Archive: This will be the lowest cost storage method and is meant to be used in long term storage of data that is infrequently to never accessed. Its default retrieval time is approximately 12 hours failing to satisfy the scenario requirement of retrieved in seconds.
Keywords
- S3 Storage Classes
- AWS Cost Optimization
- S3 Standard-IA (Infrequent Access)
- S3 Glacier
- S3 Lifecycle Policies
- Amazon S3
- AWS FinOps
- S3 Intelligent-Tiering
- Data Archiving
- Data Retrieval Fee
- AWS Storage Costs
- Data Tiering
- "how to reduce s3 storage costs"
- "when to use s3 standard vs s3 infrequent access"
- "s3 storage classes explained with use cases"
- "automating s3 tiering with lifecycle policies"
- "s3 glacier retrieval times and costs"
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