CreateDiskReplicaGroup - Elastic Compute Service - Alibaba Cloud Documentation Center

Creates a replication pair-consistent group.

Operation description

Operation Description

Replication pair-consistent groups help you manage asynchronous replication for multiple disks in disaster recovery scenarios. You can centrally manage operations for these disks. The groups ensure that data on all disks can be recovered to the same point in time. This provides disaster recovery protection for one or more instances.

When you create a replication pair-consistent group, note the following:

For information about the regions that support replication pair-consistent groups, see Async replication overview.
Replication pair-consistent groups support asynchronous disaster recovery across zones in the same region or across regions.
A replication pair can be added to a replication pair-consistent group only if the pair and the group have the same data replication direction. This means their production regions, production zones, disaster recovery regions, and disaster recovery zones must be the same.
After a replication pair is added to a replication pair-consistent group, the original Recovery Point Object (RPO) of the pair becomes invalid. Data is then replicated based on the RPO of the group.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

ebs:CreateDiskReplicaGroup

create

*DiskReplicaGroup

acs:ebs:{#regionId}:{#accountId}:diskreplicagroup/*

None

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The ID of the region where the replication pair-consistent group resides. This is the same as the region of the production site.	cn-beijing
SourceZoneId	string	Yes	The ID of the zone where the production site is located.	cn-beijing-f
DestinationRegionId	string	Yes	The ID of the region where the disaster recovery site is located.	cn-shanghai
DestinationZoneId	string	Yes	The ID of the zone where the disaster recovery site is located.	cn-shanghai-e
GroupName	string	No	The name of the replication pair-consistent group. The name must be 2 to 128 characters in length. It must start with a letter or a Chinese character, and cannot start with `http://` or `https://`. It can contain digits, colons (:), underscores (_), and hyphens (-).	myreplicagrouptest
Description	string	No	The description of the replication pair-consistent group. The description must be 2 to 256 characters in length and cannot start with `http://` or `https://`.	This is description.
ClientToken	string	No	A client token to ensure the idempotence of the request. Generate a unique value from your client for this parameter. The `ClientToken` parameter value can contain only ASCII characters and cannot exceed 64 characters in length. For more information, see How to ensure idempotence.	123e4567-e89b-12d3-a456-42665544****
RPO	integer	No	The recovery point objective (RPO) of the replication pair-consistent group, in seconds. The only supported value is 900. Valid values: 900 : 900	900
Bandwidth	integer	No	The bandwidth in Kbps. Note This parameter is not yet available.	5
ResourceGroupId	string	No	The ID of the resource group to which the replication pair-consistent group belongs.	rg-acfmvs*******
Tag	array<object>	No	The tags to add to the resource. You can add up to 20 tags.
	object	No
Value	string	No	The value of the tag.	tag-value
Key	string	No	The key of the tag.	tag-key
EnableRtc	boolean	No	Specifies whether to enable replication time control (RTC). Valid values: false: Disable RTC. true: Enable RTC. Default value: false. Note If you set this parameter to true, RTC is enabled for the replication pair-consistent group. RTC is also enabled for all asynchronous replication pairs that are added to the group.	true

Response elements

Element	Type	Description	Example
	object	The response schema.
RequestId	string	The request ID.	C123F94F-4E38-19AE-942A-A8D6F44F****
ReplicaGroupId	string	The ID of the replication pair-consistent group.	pg-xxxxxxx

Examples

Success response

JSON format

{
  "RequestId": "C123F94F-4E38-19AE-942A-A8D6F44F****",
  "ReplicaGroupId": "pg-xxxxxxx"
}

Error codes

HTTP status code	Error code	Error message	Description
500	InternalError	The request processing has failed due to some unknown error, exception or failure.	An internal error has occurred.
403	OperationDenied	The operation is not allowed.	The operation is not supported.
403	OperationDenied.InvalidStatus	The operation is not allowed in current status.	The operation is not supported in the current state.
403	OperationDenied.QuotaExceed	The operation is not allowed due to quota exceed.	The quota for performing this operation has been exceeded.
403	OperationDenied.TooMuchEmptyGroup	Operation failed because of too many empty groups.	You have created excessive empty replication pair-consistent groups.
403	Forbidden	User is not authorized to operate.	You are not authorized to manage the resource. Check the account permissions or contact the Alibaba Cloud account.
403	Forbidden.Action	User is not authorized to operate this action.	You are not authorized to perform this operation. Check the account permissions or contact the Alibaba Cloud account.
404	NoSuchResource	The specified resource does not exist.	The specified resource does not exist.
504	RequestTimeout	The request is timeout, please try again later.	The request has timed out. Try again later.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.