Cross-region replication (CRR) provides automatic and asynchronous (near real-time) replication of objects across buckets in different OSS regions. Operations such as the creation, overwriting, and deletion of objects can be synchronized from a source bucket to a destination bucket.
Background information
- Billing
- OSS charges you for the traffic generated when you use CRR to replicate objects. For more information about the billing methods, see Traffic fees.
- Each time an object is synchronized, OSS counts the number of requests and charges fees for the requests. For more information about the billing methods, see API operation calling fees.
- Usage notes
- You can configure CRR rules to synchronize data from a source bucket to multiple destination buckets. You can configure up to 100 CRR rules for a bucket. A bucket can be configured as the source bucket or destination bucket. If your business requires more than 100 CRR rules for a bucket, contact the technical support.
- The source bucket and destination bucket must be both versioned or unversioned. The versioning state of the source bucket and destination bucket cannot be changed when data is being synchronized between the two buckets.
Enable CRR
Disable CRR
You can click Disable to disable CRR.

After CRR is disabled, the replicated data is stored in the destination bucket, and the incremental data in the source bucket is not replicated to the destination bucket.