Too Long; Didn't Read
At our school there are always power outages. Sometimes they last only a few seconds, sometimes several hours. To ensure that our IT infrastructure does not suffer from this, we have installed a UPS for our servers and network devices. These help to bridge short power outages (up to 1 hour) or fluctuations in current. For any lengthy outages, we automatically shut down our servers when the UPS reaches critical battery level. For this we use NUT (Network UPS Tools).