Changing the relationship bandwidth for a cluster using the CLI

You can use the command-line interface (CLI) to change the relationship bandwidth for a cluster.

The relationship bandwidth limit controls the maximum rate at which any one remote-copy relationship can synchronize. The overall limit is controlled by the bandwidth parameter of each cluster partnership. The default value for the relationship bandwidth limit is 25 megabytes per second (MBps), but you can change this by following these steps:

  1. Issue the svcinfo lscluster command to list the current relationship bandwidth limit of the cluster. For example:
    svcinfo lscluster cluster_id_or_cluster_name
    Where cluster_id_or_cluster_name is the ID or name of the cluster.
  2. For future reference, record the current relationship bandwidth limit that is displayed. For example: relationship_bandwidth_limit 25
  3. To change the relationship bandwidth limit of the cluster, issue the following command:
    svctask chcluster -relationshipbandwidthlimit
     cluster_relationship_bandwidth_limit 

    Where cluster_relationship_bandwidth_limit is the new limit for the cluster. Issue the command on both clusters in a relationship.

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