2.2.6 DSROLE_SERVER_STATE

The DSROLE_SERVER_STATE enumeration specifies the role of the computer prior to the upgrade.

 typedef  enum _DSROLE_SERVER_STATE
 {
   DsRoleServerUnknown = 0,
   DsRoleServerPrimary,
   DsRoleServerBackup
 } DSROLE_SERVER_STATE,
  *PDSROLE_SERVER_STATE;

DsRoleServerUnknown:  The previous role of the computer is unknown.

DsRoleServerPrimary:  The previous role of the computer was primary domain controller in a legacy domain.

DsRoleServerBackup:  The previous role of the computer was backup domain controller in a legacy domain.