The DNS alias 'virtualname.local.com' is not an alias for this computer(hostname). You must enter a DNS alias for 'hostname'.
We need to configure the Enterprise vault with the virtual name but since the wizard is for configuring a stand alone node it fails as it would try to find a DNS alias for the physical hostname.
The wizard does not launch correctly as it finds that the cluster is not configured. The wizard checks following registry key to find the cluster configuration status.
HKEY_LOCAL_MACHINE\Software\Veritas\VCS\Base\Clusternodemode

ClusterNodeMode=0 - This indicates VCS is not installed and will result in the 'VCS not installed' error during the system scan
ClusterNodeMode=1 - This indicates VCS is installed, but not configured
ClusterNodeMode=2 - This indicates VCS is installed and configured (server is already part of a cluster)
1. Ensure you have configured the cluster and the required service group for Enterprise vault using the Enterprise vault cluster setup wizard.
2. Check the above mentioned registry key. Sometimes the registry value would be set to ClusterNodeMode=1 even after you have cluster configuration has been completed and this causes the wizard to not work as expected.
3. Change this registry key value to ClusterNodeMode=2
4. In addition the following keys are also used by some wizards.
ClusterID
Clustername
NodeID
5. You need to create these registry values if they are missing.
6. You can get the clusterID from the llttab.txt file located in C:\Program Files\Veritas\comms\llt

7. You can get the Clustername from the VCS Java console or the main.cf file located in
C:\Program Files\Veritas\cluster server\conf\config


8. You can get the NodeID from llthost.txt file located in C:\Program Files\Veritas\comms\llt

9. Relaunch the Enterprise Vault configuration wizard and check if you are getting the correct option.
10. If the wizard still does not work you can check the following article for known issue with previous versions of Enterprise Vault.
Enterprise Vault Configuration Wizard faults during service group configuration
Instead the wizard launches the following window which is for a stand alone Enterprise Vault configuration.