Japan’s Massive @Tokyo Data Center

The lobby entrance to the massive At-Tokyo data center. (Photo by Alex Kane)

Could that really be a data center lobby? The dramatic hallway pictured above is one of the most unusual  entrances to a data center. It’s the lobby of the enormous @Tokyo Corporation data center located within Koto-Ku, Tokyo.

The striking entrance hallway photographed by Alex Kane (via Flickr) is one of several notable features about the @Tokyo facility, which is one of the world’s largest data centers, and also one of the roundest. The building houses more than 1.4 million square feet of space, most of it dedicated to colocation racks, caged suites, and dedicated data center real suites.

@Tokyo was established as a data center business in June, 2000 with Tokyo Electric Power Company, Inc., and INTEC Inc. as the main shareholders.  Here’s an additional view of this unusual data center.

The exterior of the At-Tokyo data center, which has more than 1.4 million square feet of space. (Photo by Alex Kane).

We’re trying to learn more details about this facility, including whether it includes office space or the entire faclity is dedicated to data center space – a key criteria for potential inclusion in our list of The World’s Largest Data Centers.

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About the Author

Rich Miller is the founder and editor at large of Data Center Knowledge, and has been reporting on the data center sector since 2000. He has tracked the growing impact of high-density computing on the power and cooling of data centers, and the resulting push for improved energy efficiency in these facilities.

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  1. Dave Gauthier

    Rich, I was wondering when you'd get this one included in the list, mind blowing facility. I haven't been there since 2002, but at that time it was focused primarily on colocation and dedicated suites - just enough office space to support those activities. After walking through that entrance corridor you end up inside a huge pyramid lobby and security checkpoint - the top of the pyramid is a small pyramid skylight that you can see in the center of the building from the satellite view. Very impressive facility - would love to hear how many MW are built out.

  2. When I visited the facility in 2007 I didn't see any office space. I had access to multiple floors and it was all data center space. There was a small cafe area to eat, that was pretty much it. I was working in Lehman's space, who leased a significant amount of space in the DC at the time.

  3. Dave Howorth

    There are some small offices, usually where you see the windows, but the vast majority of it is datacenter space. Tepco are probably going to build another one in the next few years, although it is supposed to be a bit less 'round'.