http://www.veeam.com/kb1453

The VBRCatalog is by default located at C:\ on the Veeam Server, and you may need to change the location.

You will need to make changes to the registry to change the VBRCatalog folder location. To do so:

1. Stop the Veeam Services

2. Check the permissions that are set on the folder

3. Unshare the folder and move it to a new location

4. Now share the folder and reset the permissions

5. Then navigate to the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Veeam\Veeam Backup Catalog
Find the string called CatalogPath, right-click it and choose modify

Under Value Data, edit the field to display the new location

Example: D:\VBRCatalog\

6. Restart the services mentioned above