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Storage Virtual Machine (SVM) Root Volume Promotion workflow

If the root volume of your Storage Virtual Machine (SVM, formerly known as Vserver) becomes unavailable and you have protected it with a set of load-sharing mirrors, the Storage Virtual Machine (SVM) Root Volume Promotion workflow enables you to promote one of the mirrored volumes and then rename it to take the place of the original SVM source volume.

This workflow enables you to promote the root volume of an SVM with FlexVol volumes and not an Infinite Volume.

In the unlikely event that the SVM root volume becomes unavailable, NAS clients cannot mount the root of the namespace. To facilitate data access to the clients, you must replace the root volume by promoting one of the load-sharing mirror volumes, creating a replacement load-sharing mirror volume for the promoted volume, and then renaming the promoted volume to the original SVM root volume name.

The following sections provide details about the workflow and how to execute the workflow:

Prerequisites for executing the Storage Virtual Machine (SVM) Root Volume Promotion workflow

You must ensure that certain requirements are met before executing the Storage Virtual Machine (SVM) Root Volume Promotion workflow. You must be a cluster administrator for executing this workflow.

  • Your system must be running clustered Data ONTAP.
    Note: This workflow is qualified to work with Data ONTAP 8.2.1 and later.
  • OnCommand Workflow Automation (WFA) 3.0 must be installed.
  • You must have added OnCommand Unified Manager 6.1 or later as a data source in WFA and obtained the latest Unified Manager data.
  • You must have NAS clients using CIFS or NFSv3.

    NFSv4 clients are not supported with read-only load-sharing mirrors.

  • The cluster must already be created and the cluster time must be synchronized with an NTP server.
  • The SVM root volume must already be protected.

What happens when you execute the Storage Virtual Machine (SVM) Root Volume Promotion workflow

The Storage Virtual Machine (SVM) Root Volume Promotion workflow enables you to replace the SVM root volume if it becomes unavailable by promoting one of the load-sharing mirror volumes and then renaming it to take the place of the original SVM source volume.

The workflow involves promoting one of the load-sharing mirror volumes, creating a replacement load-sharing mirror volume for the promoted volume, renaming the promoted volume to the original root volume name, establishing a SnapMirror relationship, and initializing the load-sharing mirror to create a baseline for the newly created load-sharing mirror volume, and then updating the load-sharing mirror set.

The following illustration displays the tasks involved in executing the workflow:


Image displays tasks performed in the Storage Virtual Machine Root Volume Promotion workflow.

Executing the Storage Virtual Machine (SVM) Root Volume Promotion workflow

The Storage Virtual Machine (SVM) Root Volume Promotion workflow enables to replace your SVM root volume by promoting one of the load-sharing mirror volumes.

Before you begin

You must have reviewed the requirements for executing the workflow.

Steps

  1. Log in to WFA by providing the necessary credentials.
  2. Click Portal > Data Protection > Storage Virtual Machine Root Volume Promotion.
    Tip: You can use the filter () to locate the workflow.
  3. Click the Execute icon ().
    The Execute Workflow 'Storage Virtual Machine Root Volume Promotion' dialog box is displayed.
  4. Select the cluster name.
  5. Select the SVM name.
  6. Select the load-sharing mirror volume that you want to promote.
  7. Optional: Click Preview to validate your workflow before executing it.
  8. Click Execute.
    You can also schedule the workflow for execution at a later date and time by selecting the Choose Date and Time for Execution check box.