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Managing Cluster Connections

  • Updated on Aug 7, 2026
  • Published on Aug 5, 2026
  • 3 minute(s) read
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Connecting Clusters to DataSpace

As a prerequisite, ensure that the cluster you are going to connect to VAST DataSpace, is configured with an IPv4 management IP. VAST clusters with IPv6 management IPs cannot be added to VAST DataSpace.

If you configured a remote cluster as a replication peer, that remote cluster is automatically added to VAST DataSpace provided it has connectivity to the local cluster through the management network.

In order to configure replication or global access involving the local cluster as a source or destination, you must connect the local cluster to VAST DataSpace as well as the other clusters that will participate.

  1. In the VAST Web UI, open the DataSpace page (select DataSpace from the left navigation menu.)

  2. From the Add New dropdown, select Connect My Clusters.

  3. Complete the fields for one of the clusters that you want to connect to DataSpace:

    VMS IP

    Enter the IP of the cluster's VMS.

    Username

    Enter a valid VMS username for the cluster.

    Password

    Enter the password for the specified user.

  4. If you want to add another cluster, click Add Another and then enter the details for another cluster.

  5. Optionally repeat the previous step for additional clusters.

  6. When you are done, click Create.

    Each cluster that you added now has a card that appears in the Cluster Cards tab.

Viewing Connected Clusters

The DataSpace page provides the following tools to view currently connected clusters and information about them:

Viewing Cluster Topology

DSTopology.png

The topology shows:

  1. Any connected clusters.

  2. Any  connections established between connected clusters.

You can:

  • Click or hover on a cluster (1) to highlight up the cluster's card in the Cluster Cards tab.

  • Click a replication connection to identify its record in the Paths tab.  

  • Click a Global Access connection to view it's configuration.

  • Click HowToRead.png (3) for a complete guide to the graphic representation of the topology, including cluster types (VoC or on-premises), capacity, bandwidth and IOPS in the topology.VAST on Cloud

Viewing Cluster Cards

On the Cluster Cards tab, each cluster's card provides shows the alarm status of the cluster, the following details are shown per cluster:

cluster_card.png

  1. Cluster details:

    • Data Usage. Shows how much physical data storage capacity there is on the cluster and how much of it is in use.  

    • BW. The data transmission rate on the connection between the cluster and its client network.

    • IOPS. The number of I/O operations per second on the connection between the cluster and its client network.

    • Latency. The time needed to perform an I/O operation on the connection between the cluster and its client network.

  2. Open Cluster button. Opens the Cluster's VMS in another browser tab.

  3. Alarm status

  4. Buttons for removing the cluster from DataSpace and updating user credentials.

Viewing the Clusters Table

On the Clusters Table tab you can display the following columns:

Name

The name of the cluster.

Logical Space

The amount of logical capacity on the cluster.

Logical Space Used

The amount of logical capacity in use on the cluster.

Region

If the cluster is a VAST on Cloud cluster, this column displays the AWS region where the cluster resides.

State

The state of the cluster:

  • INIT. Initializing the cluster.

  • ACTIVATING. The cluster is being activated.

  • ONLINE. The cluster is online.

  • DEACTIVATING. The cluster is being deactivated.

  • OFFLINE. The cluster is offline.

  • FAILED. The cluster has failed.

  • UNKNOWN. DataSpace is unable to detect the cluster state.

You can use the right-click menu to export any row or selected rows to a CSV file.

Opening a Cluster

To open the VMS of a connected cluster, click the Open Cluster button on the cluster's card. The VMS of the cluster opens in a browser tab.    

Updating User Credentials for a Connected Cluster

If the user credentials that were supplied when a cluster was connected are changed on the remote cluster, the cluster becomes disconnected. Update the user credentials to restore the connection.  

To update the credentials for a connected cluster:

  1. Click the update_user_creds.png button.

  2. Enter a valid username and password for the cluster's VMS in the fields provided.

  3. Click Create.

Removing a Connected Cluster

  1. Click the remove_connected_cluster.png button.

  2. Click Yes to confirm the removal.

    The cluster is removed from DataSpace.

Related articles
  • Viewing Connected Clusters
    VAST Cluster > Version 5.4 > VAST Cluster 5.4 Administrator's Guide > The VAST DataSpace > Multi-Cluster Management > Managing Cluster Connections
  • Viewing Connected Clusters
    VAST Cluster > Version 5.3 > VAST Cluster 5.3 Administrator's Guide > The VAST DataSpace > Multi-Cluster Management > Managing Cluster Connections
  • Viewing Connected Clusters
    VAST Cluster > Version 5.2 > VAST Cluster 5.2 Administrator's Guide > Global Namespace > Multi-Cluster Management > Managing Cluster Connections