On November 9th 2017, CNAF datacenter was flooded due to a broken waterworks pipe in a nearby street. Despite the waterproof doors, the water managed to enter the rooms of the data centers, seriously damaging electronic appliances, servers and storage equipment. We are working hard to restore the center as soon as possible. All INFN- National services and all Information systems applications are temporarily hosted at the Institute of Radioastronomy at CNR in Bologna, and are working. Several weeks are still needed for a complete recovery of the center.