This object controls creation or deletion of a row in the table mapping hosts to servers, following the standard SNMP RowStatus convention. This is the row that actually associates a virtual hostname with a specific candidate server, so an admin creating this row is the step that puts a server into the pool of candidates the Director considers for that hostname's queries. Adding a new backend server to an existing virtual hostname's rotation requires creating this mapping row; deleting it removes that server from consideration for that hostname without needing to remove the server's own row entirely, since it might still serve other hostnames.