Configuring the VMDg or VMNSDg resources for the disk groups
Configuration involves the following tasks:
Create the VMDg (in case of shared storage) or VMNSDg (in case of non-shared storage) resources in the RVG service group by copying them from the application service group.
If you are creating a DR configuration in a non-shared storage environment, modify the DGGuid attribute for the new VMDg or VMNSDg resource in the RVG service groups at both the sites (primary site and the disaster recovery site) separately to ensure the desired failover behavior.
Configure the following attributes in the application service group for the MountV resource.
Resources for the disk group for the application system files:
VMDg Resource Name
Volume Name
To create a VMDg or VMNSDg resource for the disk group
- In the VCS Cluster Explorer window, select the application service group in the left pane.
- On the Resources tab, right-click the VMDg or VMNSDg resource for the disk group, and click .
- In the left pane, select the RVG service group.
- On the Resources tab, right-click in the blank resource display area and click .
- In the Name Clashes window, change the name of the VMDg or VMNSDg resource for the RVG service group.
- Click .
Modify the DGGuid attribute for the new disk group resource.
See Modifying the DGGuid attribute for the new disk group resource in the RVG service group.
To modify the MountV resources in the application service group
- In the VCS Cluster Explorer window, select the application service group in the left pane.
- In the Resources tab display area, right-click the MountV resource for the application and select .
- In the Properties View window, verify that the attribute is the volume created for the application.
- In the same Properties View window, for the attribute, click .
- In the Edit Attribute window, modify the scalar value to be the VMDg (in case of shared storage) or VMNSDg (in case of non-shared storage) resource that was just created in the RVG service group.
- Close the Properties View window.
- Repeat this procedure for any additional MountV resources for the application.
To enable the VMDg or VMNSDg resource in the RVG service group
- In the left pane, select the RVG service group.
- In the Resources tab display area, right-click the VMDg or VMNSDg resource and select .
Modifying the DGGuid attribute for the new disk group resource in the RVG service group
To modify the DGGuid attribute for the new VMDg or VMNSDg resource in the RVG service group
- From the VCS Cluster Explorer, in the left pane, select the RVG service group.
- In the right pane, select the Resources tab.
- In the Resources tab display area, right-click the new VMDg or VMNSDg resource and click .
- In the Properties View window, locate the DGGuid attribute and click the edit icon.
- In the Edit Attribute window, edit the attribute by performing the following actions sequentially:
Select .
From the dropdown list select the first node in the primary zone (Zone 0).
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In the Scalar Value field specify the GUID of the disk group that is imported on the node.
Run the VMGetDrive utility at the command prompt to retrieve the GUID.
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Repeat the previous two steps, and select a different node from the dropdown list each time. You must specify the GUID separately for each node displayed in the dropdown list.
In case of a shared storage environment (VMDg resource), if there are multiple nodes in the primary zone, then the disk group GUID will be the same for all systems within the zone. However, the GUID will always be different across zones.
- In the Properties View window, verify that all nodes in the RDC primary zone have DGGuid values specified.
Note: |
If you are creating a DR configuration manually for a non-shared storage environment, you have to modify the DGGuid attribute of the VMNSDg resource in the RVG service groups at both the sites (primary site and the disaster recovery site) separately. |
- Close the Properties View window.