public WhiskasDemo() throws Exception {
target1 = new WhiskasDevice(new DummyDevice(BLOCK_SIZE, BLOCK_COUNT));
target2 = new WhiskasDevice(new DummyDevice(BLOCK_SIZE, BLOCK_COUNT));
raid0 = new WhiskasDevice(
new Raid0Device(new Device[] { target1, target2 }));
raid0.open();
data = new byte[BLOCK_SIZE];
for (int i = 0; i < data.length; i++) {
data[i] = 0;