You can deactivate the VLDB service and unload it using either iManager or a script.
In iManager, select Distributed File Services > Manage Replica Sites.
Select any server with an NSS volume that is located in the DFS management context that you want to manage.
This action locates the DFS management context, lists the servers in that context that host its VLDB service replicas, and reports the current status of the VLDB service on each replica.
Select the check box next to the VLDB replica site that you want to manage.
Select Actions > Stop to deactivate the service and unload the software module.
After the service stops successfully, the replica’s status changes to Stopped/Not Loaded .
Verify that the replica site’s status has changed to Stopped/Not Loaded by refreshing the Manage Replica Sites page.
Log in to the VLDB replica server.
Stop VLDB using the command, /etc/init.d/novell-dfs stop