Overnight between the 27th and 28th of February the building cooling failed. This was due to the pipes on the roof freezing due to very low temperatures. Emergency actions was taken at in the middle of the night to shut down enough machines to prevent a total outage of core services. The cooler has now been inspected and declared beyond repair. This is because it had no anti-freeze in the circuit.
We now have some temporary coolers installed and are monitoring their efficiency. However, please contact sys-admin before turning on additional servers.