Activates a replication pair to replicate data from the primary disk to the secondary disk across regions on a regular basis.


  • The async replication feature is supported in the China (Shanghai), China (Beijing), China (Heyuan), and China (Chengdu) regions.
  • Only replication pairs in the Created (created) or Stopped (stopped) state can be activated.
  • After a replication pair is activated, it enters the Initial Syncing (initial_syncing) state and the system performs the first asynchronous replication to replicate all data from the primary disk to secondary disk.


OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes StartDiskReplicaPair

The operation that you want to perform. Set the value to StartDiskReplicaPair.

RegionId String Yes cn-beijing

The region ID of the primary or secondary disk in the replication pair. You can call the DescribeDiskReplicaPairs operation to query the region information of replication pairs.

ReplicaPairId String Yes pair-cn-dsa****

The ID of the replication pair.

ClientToken String No 123e4567-e89b-12d3-a456-426655440000

The client token that is used to ensure the idempotence of the request. You can use the client to generate the value, but you must make sure that it is unique among different requests. The token can contain only ASCII characters and cannot exceed 64 characters in length. For more information, see How to ensure idempotence.

Response parameters

Parameter Type Example Description
RequestId String A37597A6-BB99-19B3-85EA-4C2B91F00123

The ID of the request.


Sample requests
&<Common request parameters>

Sample success responses

XML format

HTTP/1.1 200 OK


JSON format

HTTP/1.1 200 OK

  "RequestId" : "A37597A6-BB99-19B3-85EA-4C2B91F00123"

Error codes

For a list of error codes, visit the API Error Center.