Digital Realty Trust

Reporter Mark Fontecchio recently visited Digital Realty Trust's data center in Chicago, which is LEED-certified.

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  One of the entrances to Digital Realty Trust's LEED-certified data centers in Chicago.

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  Digital Realty Trust started renovations on the building in 2000. It was originally built in 1912 and at one point housed the Chicago Manufacturing Division.

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  This library on one of the floors is one of the reasons why the building is a national historic landmark. Now a conference center, it has been rented out in the past for Playboy photo shoots.

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  One of the hallways in the building.

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  Rack 'em and stack 'em. Digital Realty Trust maintains the traditional hot-aisle, cold-aisle configuration in their data centers, although they don't get any LEED points for doing so.

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  Digital did get points for having high-efficiency chillers as well as variable-state fans on its air handlers.

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  This ashtray outside the building is one of the so-called low-hanging fruit items that buildings can do to get LEED points. It counts toward indoor air quality management.