S3 Glacier storage with Glaciers3ObjectOverhead

0

Hi,

I had a S3 bucket where most of my storage was in StandardStorage class and after 30 days objects were moved to Standard-IA class.

I have decided to change this behavior and to move all objects to Glacier on the day 1. On Metrics tab, I can now see that there are also objects marked as GlacierObjectOverhead & GlacierS3ObjectOverhead. From what I understand from the documentation, those are used to store metadata (such as name) about each "base" object. Which is weird is I have only 4Gb of objects stored but almost 60 Gb of GlacierObjectOverhead objects. So my question is : wouldn't it be more expensive to use Glacier ? Why do we have this weird behavior where metadata takes more space than the object itself (4 vs 60 Gb) ?

Thank you

Mehmet
질문됨 9달 전852회 조회
1개 답변
0

Hi,

You 4 GB are probably made of many small objects rather than big ones. Then the overhead is computed this way:

GlacierObjectOverhead – For each archived object, S3 Glacier adds 32 KB of storage for index and related 
metadata. This extra data is necessary to identify and restore your object. You are charged S3 Glacier 
Flexible Retrieval rates for this additional storage.

GlacierS3ObjectOverhead – For each object archived to S3 Glacier Flexible Retrieval, Amazon S3 uses 8 KB 
of storage for the name of the object and other metadata. You are charged S3 Standard rates for this 
additional storage.

Source: https://docs.aws.amazon.com/AmazonS3/latest/userguide/metrics-dimensions.html

So, compute with you number of objects (that you don't mention) to see if the 60GB in Glacier look correct. Does it explain the "weird behavior" as you describe it?

Glacier Deep Archive (if you use this option) is approx 20x cheaper than S3 Standard. So, you would still have a (small) cost benefit to go to Glacier. See https://aws.amazon.com/s3/pricing/

Best,

Didier

profile pictureAWS
전문가
답변함 9달 전

로그인하지 않았습니다. 로그인해야 답변을 게시할 수 있습니다.

좋은 답변은 질문에 명확하게 답하고 건설적인 피드백을 제공하며 질문자의 전문적인 성장을 장려합니다.

질문 답변하기에 대한 가이드라인

관련 콘텐츠