The 19 inches rack

The 19″ rack as a long story and like most “normalized” artifacts, some of its dimensions are inherited by past uses/components (telephony?), some of which are not used anymore.

The 19″ rack is globally used as a standardized server enclosure (or computer cabinet) in data centers. Build in steel and usually heavy, it is nonetheless designed to be mobile (mounted on wheels and easily packable on pallet and/or within containers for transportation). This massive use leads to the common esthetic of the data center, with straight lines of cabinets containing multiple servers. A 19″ rack usually do the same thing at a very small size than a full data center: it physically protects servers, organizes their dispatching in a very rational way and control air flows & climate/temperature.

We cannot speak about servers cabinet without mentioning the other normative unit that structure them: “U“. A “U” is a rack unit that describes the height of the equipments within the rack.

The mobile & expandable data center: containers and other ideas

As we were speculating in our I&IC – Preliminary intentions about a very versatile/mobile and distributed versions of the cloud infrastructure (datacenters), almost a physical bittorrent so to say, we are interested into the existing versions of mobile data centers.

The Uptime Institute. Tier certifications

Founded in 1993 by Kenneth G. Brill, the Uptime Institute was acquired by The 451 Group[6] (named after the book Fahrenheit 451 by Ray Bradbury) in 2009. Since then, the Uptime Institute has been an independent division of The 451 Group[7] which is headquartered in New York with offices in locations including San Francisco, Washington DC, London, Boston, Seattle, Denver, São Paulo, Dubai, and Singapore. The 451 Group also owns 451 Research, a technology-industry syndicated research and data firm.

Wikipedia (2014)

… “named after the book Fahrenheit 451″ … no need to invent it!

Mobility & data centers – SGI Ice Cubes

SGI had a full line of mobile or modular data centers. Yet we don’t find traces of these products on the actual website of the brand anymore. Does this mean that small scale, mobile or modular datacenters don’t work with big corporate clients and that tere is no real needs for that?

Some pictures here in the gallery about their different propositions. From small mobile cabinet to trucks. There are therefore and undoubtedly close links between the ideas of mobility, fragmentation or reconfiguration about data centers and the one of transportation (transportation of goods by the means of pallet, containers, boats, trains, cargos, etc.)

Mobility & data centers – Amazon’s containers

Via Data Center Knowledge


A Look Inside Amazon’s Data Centers

By Rich Miller

Amazon Perdix countainer.

Amazon Web Services doesn’t say much about the data centers powering its cloud computing platform. But this week the company held a technology open house in Seattle, where AWS Distinguished Engineer James Hamilton discussed the company’s infrastructure. The presentation (PDF) included an image of a modular data center design used by Amazon, which is the first official acknowledgement that the company uses modular infrastructure.

Hamilton also shared a factoid that provides a sense of the rapid growth of Amazon’s cloud platform. “Every day Amazon Web Services adds enough new capacity to support all of’s global infrastructure through the company’s first 5 years, when it was a $2.76 billion annual revenue enterprise,” Hamilton states in one of the slides.