if (disks.length > 0) {
VirtualMachineConfigSpec reConfigSpec = new VirtualMachineConfigSpec();
VirtualDeviceConfigSpec[] deviceConfigSpecArray = new VirtualDeviceConfigSpec[disks.length];
for (int i = 0; i < disks.length; i++) {
deviceConfigSpecArray[i] = new VirtualDeviceConfigSpec();
deviceConfigSpecArray[i].setDevice(disks[i]);
deviceConfigSpecArray[i].setOperation(VirtualDeviceConfigSpecOperation.REMOVE);
}
reConfigSpec.getDeviceChange().addAll(Arrays.asList(deviceConfigSpecArray));