Overriding CIFS locks for Cloud Volumes ONTAP HA in Azure

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The Account Admin can enable a setting in Cloud Manager that prevents issues with Cloud Volumes ONTAP storage failover during Azure maintenance events. When you enable this setting, Cloud Volumes ONTAP vetoes CIFS locks and resets active CIFS sessions.

About this task

Microsoft Azure schedules periodic maintenance events on its virtual machines. When a maintenance event occurs on a node in a Cloud Volumes ONTAP HA pair, the HA pair initiates storage takeover. If there are active CIFS sessions during this maintenance event, the locks on CIFS files can prevent storage failover.

If you enable this setting, Cloud Volumes ONTAP will veto the locks and reset the active CIFS sessions. As a result, the HA pair can complete storage failover during these maintenance events.

Important This process might be disruptive to CIFS clients. Data that is not committed from CIFS clients could be lost.
What you’ll need

You need to create a Connector before you can change Cloud Manager settings. Learn how.

  1. In the upper right of the Cloud Manager console, click the Settings icon, and select Connector Settings.

    A screenshot that shows the Settings icon in the upper right of the Cloud Manager console.

  2. Under Azure, click Azure CIFS locks for Azure HA working environments.

  3. Click the checkbox to enable the feature and then click Save.