Infrastructure

We moved into our brand new and state of the art datacenter back in 2007 in Liljeholmen, Stockholm. This datacenter is run by Global Crossing and currently host over 1,200 servers. In early 2010 we saw a need to expand our capacity further and therefore chose to partner with Phonera and their newly built datacenter in Hammarby, Stockholm.

The datacenter in Hammarby has fully redundant systems for power and cooling and has a sophisticated exterior protection and firefighting systems by halo producer gas. We now have two different and completely physically separated data centers located in Liljeholmen and Hammarby Sjöstad, Stockholm, allowing for purely geographical redundancy. The datacenter in Liljeholmen will also receive an upgraded substations during the summer of 2010.

In our new datacenter our customers servers are put in 47U server racks. The new center is also built to handle the most frequent external risks in the operation of servers, systems and applications. The facility minimizes the risks that is related to burglary, fire, power (ex. power outages, lightning and voltage fluctuations), water damage and sabotage.

Crystone Hammarby has fully redundant power supply through ..

.. two completely separated power supply systems, if your company's servers comes with dual Power supply, this means that your server is still working even if one of our power supplies for any reason suffer a poweroutage. The facility is fully redundant with separate A-and B-force. Either one comes with enough power to supply the entire datacenter. You can also rent a component that connects your server to A and-B supply even though there's only one power supply in the acctual server. In this datacenter, we also have a high voltage ring with its own substation, which provides feeds from two different directions into the facility.

During normal operation, power is delivered from different directions into separate substations. Electric power then goes through a separate UPS systems, which together deliver the power on to power breakdowns in the data center. Would we, for any reason have a power failure at our high-voltage loop it's backed this up by redundant batteries connected to our UPS:es. Our reserve power is supplied from two large redundant diesel generators from Volvo Penta.

The UPS and diesel generator feeds are on separate systems and are not interdependent. If there is a power failure the energy will come from the UPS batteries instead. The diesel generators are powered up to later take over the electricity supply from the UPS and batteries. And when we regain our high-voltage power supply, the two feeds, eg. Emergency and primary electronic metering, are phased out. And once we are sure that the supply of high voltage power really works the operation is returned to normal.