--- title: DMS Replication Instance description: Datadog, the leading service for cloud-scale monitoring. breadcrumbs: Docs > DDSQL Reference > Data Directory > DMS Replication Instance --- # DMS Replication Instance An AWS DMS Replication Instance is a managed compute resource that runs the AWS Database Migration Service. It performs the actual data migration and replication tasks between source and target databases. The instance provides the processing power, memory, and network capacity needed to move data securely and efficiently, supporting both one-time migrations and ongoing replication with minimal downtime. ``` aws.dms_replication_instance ``` ## Fields | Title | ID | Type | Data Type | Description | | ----------------------------------------- | ---- | ------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------- | | _key | core | string | | account_id | core | string | | allocated_storage | core | int64 | The amount of storage (in gigabytes) that is allocated for the replication instance. | | auto_minor_version_upgrade | core | bool | Boolean value indicating if minor version upgrades will be automatically applied to the instance. | | availability_zone | core | string | The Availability Zone for the instance. | | dns_name_servers | core | string | The DNS name servers supported for the replication instance to access your on-premise source or target database. | | engine_version | core | string | The engine version number of the replication instance. If an engine version number is not specified when a replication instance is created, the default is the latest engine version available. When modifying a major engine version of an instance, also set AllowMajorVersionUpgrade to true. | | free_until | core | timestamp | The expiration date of the free replication instance that is part of the Free DMS program. | | instance_create_time | core | timestamp | The time the replication instance was created. | | kms_key_id | core | string | An KMS key identifier that is used to encrypt the data on the replication instance. If you don't specify a value for the KmsKeyId parameter, then DMS uses your default encryption key. KMS creates the default encryption key for your Amazon Web Services account. Your Amazon Web Services account has a different default encryption key for each Amazon Web Services Region. | | multi_az | core | bool | Specifies whether the replication instance is a Multi-AZ deployment. You can't set the AvailabilityZone parameter if the Multi-AZ parameter is set to true. | | network_type | core | string | The type of IP address protocol used by a replication instance, such as IPv4 only or Dual-stack that supports both IPv4 and IPv6 addressing. IPv6 only is not yet supported. | | pending_modified_values | core | json | The pending modification values. | | preferred_maintenance_window | core | string | The maintenance window times for the replication instance. Any pending upgrades to the replication instance are performed during this time. | | publicly_accessible | core | bool | Specifies the accessibility options for the replication instance. A value of true represents an instance with a public IP address. A value of false represents an instance with a private IP address. The default value is true. | | replication_instance_arn | core | string | The Amazon Resource Name (ARN) of the replication instance. | | replication_instance_class | core | string | The compute and memory capacity of the replication instance as defined for the specified replication instance class. It is a required parameter, although a default value is pre-selected in the DMS console. For more information on the settings and capacities for the available replication instance classes, see Selecting the right DMS replication instance for your migration. | | replication_instance_identifier | core | string | The replication instance identifier is a required parameter. This parameter is stored as a lowercase string. Constraints: Must contain 1-63 alphanumeric characters or hyphens. First character must be a letter. Cannot end with a hyphen or contain two consecutive hyphens. Example: myrepinstance | | replication_instance_ipv6_addresses | core | array | One or more IPv6 addresses for the replication instance. | | replication_instance_private_ip_address | core | string | The private IP address of the replication instance. | | replication_instance_private_ip_addresses | core | array | One or more private IP addresses for the replication instance. | | replication_instance_public_ip_address | core | string | The public IP address of the replication instance. | | replication_instance_public_ip_addresses | core | array | One or more public IP addresses for the replication instance. | | replication_instance_status | core | string | The status of the replication instance. The possible return values include: "available" "creating" "deleted" "deleting" "failed" "modifying" "upgrading" "rebooting" "resetting-master-credentials" "storage-full" "incompatible-credentials" "incompatible-network" "maintenance" | | replication_subnet_group | core | json | The subnet group for the replication instance. | | secondary_availability_zone | core | string | The Availability Zone of the standby replication instance in a Multi-AZ deployment. | | tags | core | hstore_csv | | vpc_security_groups | core | json | The VPC security group for the instance. |