Each domain controller maintains a directory partition signature list. This command displays a list of the removed application ...

Each domain controller maintains a directory partition signature list. 
     This command displays a list of the removed application partition GUIDs.
     An application directory partition can be configured to be held or not 
     held on a particular domain controller using ntdsutil 
     (for Active Directory).
     
     [SYNTAX]

     /showncsig [DSA_LIST]