Enable Persistence and Configure QSnap or Open File Handler (OFH) on a Cluster

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Once you have installed QSnap or Open File Handler (OFH) on the physical node, and installed the associated agent on the virtual server, use the following procedure to set persistence and configure QSnap or OFH on a cluster.

 To enable persistence on a cluster:

  1. From the Cluster Administrator software, take the GxCVD and GxEvMgrc service resources offline.
  2. Add any additional physical disk resources that you want to protect as dependencies to CVD (the physical disk resource that QSnap or OFH was installed on for the virtual node is listed as a dependency by default).
  3. From the registry editor on both physical nodes, navigate to HKLM\SOFTWARE\CommVault Systems\Galaxy\Platform Information\ControlSet002<virtual node>\iDataAgent.
    1. Change the DWORD value for ClusterBFMode to 2.
    2. Close the registry editor.

  4. Configure your volumes:

    1. From the \Base directory, launch QSnapConfigTool. This executable can be run from either physical node.
    2. Click Configure Volumes, enter or Select the volume for which you want to enable QSnap or OFH bitmap persistence.
    3. Click Deactivate BF to deactivate the block-filter driver on the volume.
    4. Set the Persistence Enabled value to 1.
    5. Set the Bitmap Init Value to 0.
    6. Set the Bitmap Volume to your desired location for storing the persistence bitmap file. The volume is required to be a shared volume owned by the same virtual node that owns source volume.
    7. Click Reactivate BF to reactivate the block-filter driver.
    8. Repeat this process for all of the shared volumes you would like to protect on with QSnap or OFH on your cluster.

  5. From the Cluster Administrator software, bring the GxCVD and GxEvMgrc service resources back online.

  6. Initiate a failover by moving the group to the other physical node.
  7. The cluster volumes you configured on the original node need to be configured on the current node as well. Once configured on both nodes, you will not need to configure them again. Configure your volumes:
    1. Click Configure Volumes, enter or Select the volume for which you want to enable QSnap or OFH bitmap persistence.
    2. Click Deactivate BF to deactivate the block-filter driver on the volume.
    3. Set the Persistence Enabled value to 1.
    4. Set the Bitmap Init Value to 0.
    5. Set the Bitmap Volume to your desired location for storing the persistence bitmap file. The volume is required to be a shared volume owned by the same virtual node that owns source volume.
    6. Click Reactivate BF to reactivate the block-filter driver.
    7. Repeat this process for all of the shared volumes you would like to protect on with QSnap or OFH on your cluster.

  8. QSnap or OFH is now configured for your cluster.