Clusdb File on Windows 2008 Microsoft Cluster

Hello,

This week we are doing some tests with microsoft regarding Backup & Restore  of Microsoft Clustered environment.

I installed netbackup 7.6.0.1 Client on the servers (with windows cluster 2008)

And we see that during the backup the CLUSDB file is being skipped.

HHere is output from Diskshadow  Exclude list: technote : http://www.symantec.com/business/support/index?page=content&id=TECH76997

 WRITER "Cluster Database" 
                - Writer ID   = {41e12264-35d8-479b-8e5c-9b23d1dad37e} 
                - Writer instance ID = {46a75fd5-5b3b-4e8c-a140-189419c23b13} 
                - Supports restore events = TRUE 
                - Writer restore conditions = VSS_WRE_ALWAYS 
                - Restore method = VSS_RME_RESTORE_STOP_START 
                - Requires reboot after restore = FALSE 
                - Excluded files: 
                + Component "Cluster Database:\Cluster Database" 
                        - Name: Cluster Database 
                        - Logical path: 
                        - Full path: \Cluster Database 
                        - Caption: ClusterDatabase 
                        - Type: VSS_CT_FILEGROUP [2] 
                        - Is selectable: TRUE 
                        - Is top level: TRUE 
                        - Notify on backup complete: FALSE 
                        - Components: 
                        - File List: Path = C:\Windows\cluster\, Filespec = CLUSDB 
                        - Paths affected by this component: 
                                - C:\Windows\cluster\ 
                        - Volumes affected by this component: 
                                - \\?\Volume{9b236815-75eb-11e3-8eed-806e6f6e6963}\ [C:\] 
                        - Component Dependencies: 

Info From bpbkar While doing a backup: 
10:46:14 BKR - C:\Windows\Cluster\ 
10:46:14 INF - Filtered 'BEDS Exclude' Object: C:\Windows\Cluster\CLUSDB    <- you can see the file was excluded when excplictly telling netbackup do d C: \ SystemStaete' \ Shadowcopycomponent backup.

Question is : 

Why its in the Exclude list of the cluster vss, How should I do a GOOD backup of microsoft cluster if netbackup dosent do a backup of this file.

BTW: ntbackup of microsoft is able to backup clusdb file.