public static void stopServers () {
		
		try{
		
		replicaNA.killThread();
		if (!replicaNA.equals(null)  && !(null == replicaNA)) 
		{
			replicaNA.records.clear();
			replicaNA = null;
			//replicaNA.getThreadGroup();
		}
		
		
		replicaEU.killThread();
		if (!replicaEU.equals(null)  && !(null == replicaEU)) 
		{
			replicaEU.records.clear();
			replicaEU = null;
		}
		
		
		replicaAS.killThread();
		if (!replicaAS.equals(null)  && !(null == replicaAS)) 
		{
			replicaAS.records.clear();
			replicaAS = null;
			
		}
		
		System.out.println("Reboot servers NA, EU and AS ...");
		}
		catch (Exception e) {e.printStackTrace();}
	}