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Hello.
Looking at the Amazon S3 column in the document below, the Hong Kong region may not support cross-region copy and cross-account copy.
https://docs.aws.amazon.com/aws-backup/latest/devguide/backup-feature-availability.html#supported-services-by-region
1 Cross-Region and cross-account copy are not supported.
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Hi, also check https://docs.aws.amazon.com/aws-backup/latest/devguide/backup-feature-availability.html#features-by-region to confirm Riku's sayings
It's not about what features are currently supported that replication and other capabilities will never work across partitions. That is what partitions are for. Similarly, you can't replicate between the main partition and GovCloud, as an example.
@Leo K No, I don't think the Hong Kong region is included in "aws-cn". If the explanation in the document you are referring to is correct, the ARN of S3 created in the Hong Kong region should be as follows.
However, it actually looks like the image below. In other words, since the Hong Kong region partition is "aws", it should be included in the same partition as "us-east-1".
Well, the announcement blog post https://aws.amazon.com/blogs/enterprise-strategy/getting-started-with-aws-services-in-aws-china-beijing-region-and-aws-china-ningxia-region/ lists the Beijing, Ningxia, and Hong Kong regions together, but perhaps that's misleading then. In either case, Hong Kong is factually part of China, which anyone hosting their data in the US will likely want to take into consideration before taking any data there, with or without using a specific replication mechanism.