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Trigger manual storage HA

This procedure describes how to trigger a storage HA, moving disk export control from the active storage controller to the passive storage controller.

Procedure performed by: Solution administrator, or ThinkAgile Advantage Support (optional, via Support Mode to ThinkAgile Advantage).

Execution: On hardware only

To transfer disk export control from the active storage controller to the passive storage controller, you must simulate an active storage controller failure, so the system safely generates a storage HA event. To do this, you must simulate storage HA heartbeats between the Storage Controller service running on the active storage controller.

To trigger a manual storage HA event, follow these steps:

  1. Connect to the active storage controller via SSH. On the Hardware page, the active storage controller is labeled.
  2. In the active storage controller OS, run the following command to stop the Storage Controller Services:

    > sudo systemctl stop tacp-storage-controller

The passive storage controller becomes active in the Cloud Controller.