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A data science team requires storage for nightly log processing. The size and number of logs is unknown and will persist for 24 hours only. What is the MOST cost-effective solution?
A.
Amazon S3 Glacier
B.
Amazon S3 Standard
C.
Amazon S3 Intelligent-Tiering
D.
Amazon S3 One Zone-Infrequent Access (S3 One Zone-IA)
This is B.
As there is a minimum 30 storage fee for IA and One Zone - IA.
https://docs.aws.amazon.com/AmazonS3/latest/dev/storage-class-intro.html
The S3 Standard-IA and S3 One Zone-IA storage classes are suitable for objects larger than 128 KB that you plan to store for at least 30 days. If an object is less than 128 KB, Amazon S3 charges you for 128 KB. If you delete an object before the end of the 30-day minimum storage duration period, you are charged for 30 days. For pricing information, see Amazon S3 pricing.
I thought it could be Intelligent tier because we can send files directly to that tier. But reviewing the documentation I remembered that the "minimal billable" is 30 days, that is, even keeping the files for 24 hours, I would charge the price for 30 days! So we have the S3 Standard that does not have a "minimal billable", charging only the days of use (24 hours)
B is correct
lol....you just said you would charge for 30 days....if you delete data within that 30 days period would be charged for the whole period of 30 days.....lol read the docs more carefully
The size and number of logs is unknown and will persist for 24 hours only. this is source. logs are auto rotated after 24 hours. In destination they have not specified the time. And IA has default retention of 30 days. and size as 128KB. we dont know these two. So going with S3
B
The S3 Standard-IA and S3 One Zone-IA storage classes are suitable for objects larger than 128 KB that you plan to store for at least 30 days. If you delete an object before the end of the 30-day minimum storage duration period, you are charged for 30 days.
https://docs.aws.amazon.com/AmazonS3/latest/userguide/storage-class-intro.html
That would make sense, if not that you can move files to One Zone (and Standard) IA only after 30 days. Since the logs live only 24 hours, you would store them on S3 standard. Glacier is cheaper, but it has a 90-day minimum retention (and you would incur in fees if you delete the files before that)
This is INCORRECT. Please see quote with link “ Data can be uploaded directly into S3 One Zone-IA, or can be populated by using S3 Lifecycle policies to tier data into S3 One Zone-IA.” https://aws.amazon.com/about-aws/whats-new/2018/04/announcing-s3-one-zone-infrequent-access-a-new-amazon-s3-storage-class/#:~:text=For%20other%20infrequently%20accessed%20data,into%20S3%20One%20Zone%2DIA Answer is IA
Data can be uploaded directly into S3 One Zone-IA, or can be populated by using S3 Lifecycle policies to tier data into S3 One Zone-IA. S3 One Zone-IA is available today in all AWS commercial Regions.
https://aws.amazon.com/about-aws/whats-new/2018/04/announcing-s3-one-zone-infrequent-access-a-new-amazon-s3-storage-class/#:~:text=For%20other%20infrequently%20accessed%20data,into%20S3%20One%20Zone%2DIA.
Answer C, I think!
https://aws.amazon.com/about-aws/whats-new/2021/09/amazon-s3-intelligent-tiering-automates-storage-savings/
Previously, S3 Intelligent-Tiering was optimized for long-lived objects stored for a minimum of 30 days and objects larger than 128 KB. With these changes, S3 Intelligent-Tiering is the ideal storage class for data with unknown, changing, or unpredictable access patterns, independent of object size or retention period. You can use S3 Intelligent-Tiering as the default storage class for data lakes, analytics, and new applications.
S3.
Pointer here is : Less cost.
if you look at a glance, one will think it should be one zone IA due to "unknown " but here key pointer is log stored only for 24 hrs but if you took one zone IA, minumum charge will be 30 days.
Between Standard and Intelligent Tier. I know my data is only stored for 24 hours and I want cost effective. Intelligent ties will have addition monitoring and tiering charge . Even if it is minsicule charge , I would go for standard. No benefit with Intelligent + additional costs. so B
for the ones chosing Intelligent tiering, pay attenttion to this:
S3 Intelligent-Tiering: Designed for: Data with unknown, changing, or unpredictable access patterns
everthing is completely KNOW in the use case.
B
A - Wrong -> long-term storage
C - Wrong -> Intelligent tier is forunknow access pattern, charge for 30 days, and has a monitoring fee
D - Wrong -> Charges for 30 days
"they will be retained for 24 hours"
S3 Intelligent-Tiering is the ideal storage class for data with unknown, changing, or unpredictable access patterns, independent of object size or retention period.
https://aws.amazon.com/s3/storage-classes/intelligent-tiering/
Answer is C
keypoint : amount and quantity of logs are unclear
https://aws.amazon.com/about-aws/whats-new/2021/09/amazon-s3-intelligent-tiering-automates-storage-savings/
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