rrdDef.addArchive(AVERAGE, 0.5, 1440, 336);
rrdDef.addArchive(MIN, 0.5, 1, 1440);
rrdDef.addArchive(MIN, 0.5, 30, 336);
rrdDef.addArchive(MIN, 0.5, 60, 744);
rrdDef.addArchive(MIN, 0.5, 1440, 336);
rrdDef.addArchive(MAX, 0.5, 1, 1440);
rrdDef.addArchive(MAX, 0.5, 30, 336);
rrdDef.addArchive(MAX, 0.5, 60, 744);
rrdDef.addArchive(MAX, 0.5, 1440, 336);
rrdDb = new RrdDb(rrdDef);
}