Hello Hsn,  You can disable standalone option and then you would have an option to join the same CIFS server to a AD domain.  Log in to Unisphere Go to Settings -> Shared folder server settings -> Highlight the CIFS server and click on details   Go to Sharing protocols and click on disable option.  Note :-  This would disable standalone CIFS server option and by doing this users will get disconnected to the CIFS shares.  Once you disable, then you would have an option to re-join the CIFS server to AD domain.
Hello,   I created a standalone CIFS server.  Is there any method of changing this CIFS server into a domain participation from the standalone?   Best Regards,
From "Standalone" to "domain participation(Join to the Active Directory)"