：CreateTairInstance

The ID of the region where you want to create the instance. You can call the DescribeRegions operation to query the most recent region list.

The name of the instance. The name must meet the following requirements:

• The name is 2 to 80 characters in length.
• The name starts with a letter and does not contain spaces or special characters. Special characters include @ / : = " < > { [ ] }

The password that is used to connect to the instance. The password must meet the following requirements:

• The password is 8 to 32 characters in length.
• The password contains at least three of the following character types: uppercase letters, lowercase letters, digits, and special characters. Special characters include ! @ # $ % ^ & * ( ) _ + - =

The instance type. For more information, see the following topics:

• DRAM-based instances
• Persistent memory-optimized instances
• ESSD-based instances

The primary zone ID of the instance. You can call the DescribeRegions operation to query the IDs of available zones.

The billing method. Valid values:

• PrePaid (default): subscription
• PostPaid: pay-as-you-go

The ID of the virtual private cloud (VPC). You can call the DescribeVpcs operation to query the ID of the VPC.

The ID of the vSwitch that belongs to the VPC. You can call the DescribeVpcs operation to query the ID of the vSwitch.

The subscription duration. Valid values: 1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 24,36, and 60. Unit: months.

The ID of the promotion event or the business information.

The coupon code.

If you want to create an instance based on the backup set of an existing instance, set this parameter to the ID of the source instance.

If your instance is a cloud-native cluster instance, we recommend that you use DescribeClusterBackupList to query the backup set ID of the cluster instance, such as cb-xx. Then, set the ClusterBackupId request parameter to the backup set ID to clone the cluster instance. This eliminates the need to specify the backup set ID of each shard.

You can set the BackupId parameter to the backup set ID of the source instance. The system uses the data stored in the backup set to create an instance. You can call the DescribeBackups operation to query backup set IDs. If the source instance is a cluster instance, set the BackupId parameter to the backup set IDs of all shards of the source instance, separated by commas (,). Example: "10**,11**,15**".

This parameter is supported for specific new cluster instances. You can query the backup set ID by calling the DescribeClusterBackupList operation.

• If this parameter is supported, you can specify the backup set ID. In this case, you do not need to specify the BackupId parameter.
• If this parameter is not supported, set the BackupId parameter to the IDs of backup sets in all shards of the source instance, separated by commas (,). Example: "2158****20,2158****22".

The private IP address of the instance.

Specifies whether to use a coupon. Valid values:

• true: uses a coupon.
• false (default): does not use a coupon.

Specifies whether to enable auto-renewal for the instance. Valid values:

• true: enables auto-renewal.
• false (default): disables auto-renewal.

The subscription duration that is supported by auto-renewal. Unit: month. Valid values: 1, 2, 3, 6, and 12.

The ID of the resource group to which you want to assign the instance.

• You can query resource group IDs by using the ApsaraDB for Redis console or by calling the ListResourceGroups operation. For more information, see View basic information of a resource group.

• Before you modify the resource group to which an instance belongs, you can call the ListResources operation to view the current resource group of the instance.

Specifies whether to enable automatic payment. Set the value to true.

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 the token is unique among different requests. The token is case-sensitive. The token can contain only ASCII characters and cannot exceed 64 characters in length.

The storage type. Example values: essd_pl1, essd_pl2, and essd_pl3.

Valid values:

• essd_pl0
• essd_pl1
• essd_pl2
• essd_pl3

The storage space of cloud disks. Valid values vary based on the instance specifications. For more information, see ESSD-based instances.

The shard type of the instance. Valid values:

• MASTER_SLAVE (default): runs in a master-replica architecture that provides high availability.
• STAND_ALONE: runs in a standalone architecture. If the only node fails, the system creates a new instance and switches the workloads to the new instance. This may cause data loss. You can set the ShardType parameter to this value only if the instance uses the single-zone deployment mode. If you set the ShardType parameter to this value, you cannot create cluster or read/write splitting instances.

The number of data nodes in the instance. Valid values:

• 1 (default): You can create a standard instance that contains only a single data node.
• 2 to 32: You can create a cluster instance that contains the specified number of data nodes.

The number of read replicas in the primary zone. This parameter applies only to read/write splitting instances that use cloud disks. You can use this parameter to customize the number of read replicas. Valid values: 1 to 9.

The database engine version. Default value: 1.0. The parameter value varies based on the Tair instance series.

• For Tair DRAM-based instances (tair_rdb) that are compatible with Redis 5.0 or 6.0, set this parameter to 5.0 or 6.0.
• For Tair persistent memory-optimized instances (tair_scm) that are compatible with Redis 6.0, set this parameter to 1.0.
• For Tair ESSD/SSD-based instances (tair_essd) that are compatible with Redis 6.0, set this parameter to 1.0 to create an ESSD-based instance, and set this parameter to 2.0 to create an SSD-based instance.

The instance series. Valid values:

• tair_rdb: Tair DRAM-based instance
• tair_scm: Tair persistent memory-optimized instance
• tair_essd: ESSD/SSD-based instance

The ID of the secondary zone. You can call the DescribeRegions operation to query the ID of the secondary zone.

Specifies whether to use the created instance as a child instance of a distributed instance.

• If you want the created instance to be used as the first child instance, enter true.
• If you want the created instance to be used as the second or third child instance, enter the ID of the distributed instance, such as gr-bp14rkqrhac****.
• If you do not want the created instance to be used as a distributed instance, leave the parameter empty.

The tags to add to the instance.

Specifies whether to perform a dry run. Valid values:

• true: performs a dry run and does not create the instance. The system prechecks the request parameters, request format, service limits, and available resources. If the request fails the dry run, an error code is returned. If the request passes the dry run, the DryRunOperation error code is returned.
• false: performs a dry run and sends the request. If the request passes the dry run, the instance is created.

The service port number of the instance. Valid values: 1024 to 65535. Default value: 6379.

The global IP whitelist template of the instance. Separate multiple IP whitelist templates with commas (,) and make sure that each IP whitelist template is unique.

The ID of the parameter template. The instance is created based on the parameters in the parameter template. The ID must be unique.

The number of read replicas in the secondary zone when you create a multi-zone read/write splitting instance. The sum of the values of this parameter and ReadOnlyCount cannot be greater than 9.

If data flashback is enabled for the source instance, you can use this parameter to specify a point in time within the backup retention period of the source instance. The system uses the backup data of the source instance at the point in time to create an instance. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC.