EDIT

        serverIsRunning = false;

    }

    private void verifyMemoryRequirements() {

        verifyMemoryRequirement("HeapSpace", HEAP_CDMSERVER, HEAP_PER_INSTANCE, JvmManager.getHeapMemoryUsage()

            String message = memoryName + " (" + (availableSpace / MB) + "MB) insufficient for "

                    + numOfConfiguredInstances() + " instances. Increase " + memoryName + " to "

                    + (recommendedMinimumSpace / MB) + "MB";

            logger.error(message + " => disabling some instances!!!");

            // disabling some instances