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Construction work on the datacenter began in November 2011, with the facility becoming operational in January last year.
Telefonica says it has so far spent around €120m on the datacenter and, once a planned expansion (see image eight) has been completed, the telco will have invested €300m.
One new addition to the datacenter is a facility that Telefonica calls the Innovation Center.
It's an area where existing and potential customers can come and see demonstrations of the technologies Telefonica is using in the datacenter, particularly around cloud computing.
Security is tight at the datacenter. As well as nearly 150 cameras dotted around the premises, access to rooms is controlled by keycard.
Doors such as the one pictured above control who can access the rooms, as well as ensuring that there are not too many people in the room at one time as the weight on the floor needs to be closely monitored.
There are also 10,000 sensors placed around the facility to monitor conditions in the building.