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If you have S3 replication turned on on your main storage bucket and also use lifecycle policies to manage your objects, it’s important to know how Amazon S3 protects your data during this process.
When an S3 bucket is set up with replication and lifecycle policies, Amazon S3 temporarily holds off on deleting objects until it knows whether the objects have been successfully replicated. Specifically, if you have a lifecycle rule that deletes old files, S3 won’t delete any objects that are still in a “pending” state for replication. Instead, it waits until the replication status is marked as either “completed” or “failed.”
This means your files won’t be accidentally deleted before they are properly copied over to the destination bucket. The objects will stay in your source bucket until Amazon S3 confirms their replication status. Once the status is clear—either successfully replicated or failed—the lifecycle rule can then be applied, and the objects can be deleted if they meet the other criteria.
Because of this, it’s a good practice to check an object’s replication status before you manually delete anything from a bucket that has replication enabled. If the status is “failed,” you’ll want to address that issue before removing the object, to avoid losing data or deleting objects that haven’t been copied correctly.
In case some objects fail to replicate, the lifecycle rules will eventually process and delete those files once the failure is recognized. To prevent data loss, regularly monitor your replication status and fix any issues that cause failures. Doing so will help ensure your data is safely copied and managed as intended.
For more details, you can refer to the official AWS documentation on how replication status works in Amazon S3.
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