Step 2: Create a DAX cluster using the AWS Management Console - Amazon DynamoDB

Step 2: Create a DAX cluster using the AWS Management Console

Follow this procedure to create an Amazon DynamoDB Accelerator (DAX) cluster in your default Amazon VPC.

To create a DAX cluster
  1. Open the DynamoDB console at

  2. In the navigation pane, under DAX, choose Clusters.

  3. Choose Create cluster.

  4. In the Create cluster window, do the following:

    1. Cluster name—Enter a short name for your DAX cluster.


      Since sudo and grep are reserved keywords, you cannot create a DAX cluster with these words in the cluster name. For example, sudo and sudocluster are invalid cluster names.

    2. Cluster description—Enter a description for the cluster.

    3. Node types—Choose the node type for all of the nodes in the cluster.

    4. Cluster size—Choose the number of nodes in the cluster. A cluster consists of one primary node and up to nine read replicas.


      If you want to create a single-node cluster, choose 1. Your cluster will consist of one primary node.

      If you want to create a multi-node cluster, choose a number between 3 (one primary and two read replicas) and 10 (one primary and nine read replicas).


      For production usage, we strongly recommend using DAX with at least three nodes, where each node is placed in a different Availability Zone. Three nodes are required for a DAX cluster to be fault-tolerant.

      A DAX cluster can be deployed with one or two nodes for development or test workloads. One- and two-node clusters are not fault-tolerant, and we don't recommend using fewer than three nodes for production use. If a one- or two-node cluster encounters software or hardware errors, the cluster can become unavailable or lose cached data.

    5. Choose Next.

    6. Subnet group—Select Choose existing and choose the subnet group that you created in Step 1: Create a subnet group using the AWS Management Console.

    7. Access control—Choose the default security group.

    8. Availability Zones (AZ)—Choose Automatic.

    9. Choose next.

    10. IAM service role for DynamoDB access—Choose Create new, and enter the following information:

      • IAM role name—Enter a name for an IAM role, for example, DAXServiceRole. The console creates a new IAM role, and your DAX cluster assumes this role at runtime.

      • Select the box next to Create policy.

      • IAM role policy—Choose Read/Write. This allows the DAX cluster to perform read and write operations in DynamoDB.

      • New IAM policy name—This field will populate as you enter the IAM role name. You can also enter a name for an IAM policy, for example, DAXServicePolicy. The console creates a new IAM policy and attaches the policy to the IAM role.

      • Access to DynamoDB tables—Choose All tables.

    11. Encryption—Choose Turn on encryption at rest and Turn on encryption in transit For more information, see DAX encryption at rest and DAX encryption in transit.

    A separate service role for DAX to access Amazon EC2 is also required. DAX automatically creates this service role for you. For more information, see Using service-linked roles for DAX.

  5. When the settings are as you want them, choose Next.

  6. Parameter group—Choose Choose existing.

  7. Maintenance window—Choose No preference if you don't have a preference when software upgrades are applied, or choose Specify time window and provide the Weekday, Time(UTC) and Start within (hours) options to schedule your maintenance window.

  8. Tags—Choose Add new tag to enter a key/value pair for tagging purposes.

  9. Choose Next.

On the Review and create screen, you can review all of the settings. If you are ready to create the cluster, choose Create cluster.

On the Clusters screen, your DAX cluster will be listed with a status of Creating.


Creating the cluster takes several minutes. When the cluster is ready, its status changes to Available.

In the meantime, proceed to Step 3: Configure security group inbound rules using the AWS Management Console and follow the instructions there.