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Data Federation AWS S3 Limitations
Atlas Data Federation supports the following Amazon S3 storage classes only:
Data Federation supports files in the Standard storage
class by default. To enable support for files in the
Intelligent Tiering and Standard-Infrequent Access
storage classes, see
stores.[n].additionalStorageClasses.
Data Federation does not support creating a federated database instance with S3 buckets from more than one AWS account.