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For Cross-Region Replication (CRR) and Same-Region Replication (SRR), you pay the S3 charges for storage in the selected destination S3 storage classes, for the primary copy, for replication PUT requests, and for applicable infrequent access storage retrieval charges. For CRR, you also pay for inter-region Data Transfer OUT from S3 to each destination region.
Replication Time Control(RTC) comes with additional cost($0.015/GB) with an assurance of data replication within that time. There is no charge for transferring data between S3 buckets within same AWS region but data transfer would be charged for cross region.
So, to conclude, within the same region:
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You won't pay for data transfer cost
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You'd pay for storage, API calls made to replicate
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RTC cost if you enable that while setting up replication.
Reference:
Hope this helps.
Comment here if you have additional questions, happy to help.
Abhishek
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@secondabhi_aws I was looking at the PUT, COPY, POST, LIST (1,000 request) price list and saw that there is a cost for COPY. Does this COPY operation refer to the act of copying objects between buckets?
Yes, COPY operation is also an API call, for S3 replication, there would be PUT API call. This pricing is talking about cost for API(PUT, COPY, POST, LIST). If you copy objects using s3api(COPY/PUT) or use s3 replication(PUT), in either of the case API charges would be there. Hope this helps.
Do you have any additional questions?
Right, in this case if I choose to just use the copyObject from the AWS SDK (PHP), I'll just pay for the PUT request (every 1000), correct? Or will there be some other cost?
All this operation I will always do manually, object by object.
$this->client->copyObject([ 'Bucket' => S3_NEW_BUCKET, 'CopySource' => S3_OLD_BUCKET.'/'.$source, 'Key' => $destination, ]);
Yes, that's correct. API cost + Storage cost(obviously) + Data Transfer Cost(only if Cross region copy)