Last week we installed a new conditioning unit. The new unit is larger than the current setup and has a capacity of 26kw. With the new unit we have enough capacity for the near future.
We noticed in may 2014 that the temperatures were rising on the data-floor. This because of the rapid grow.
We installed a cold corridor keeping the cold air trapped in front of the racks. But we noticed that this wasn't enough. The servers in the upper sections of the racks were almost 10 degrees hotter then the servers in the middle of lower section. That is when we decided to order a extra cooling unit.