racks

Racks, LinkedIn Has A New Structure

The giant social networking designs new racks and share their benefits with industry. LinkedIn has a new structure for data center racks, called Open19, as unveiled the chief architect of the company infrastructure, Yuval Bachar, DCD Webscale event in San Jose.

Open19 is designed to use a standard size rack compatible with existing equipment and spaces, but introducing a much more efficient within this structure. The novelty of LinkedIn uses about half the equipment for common elements, such as power distribution, eliminating waste and wiring, and also making it much faster and easier to install. It is an alternative to Open Rack 21-inch Open Compute Project.

“We looked at the Open Rack 21 inch, and said no, it needs to adapt to any 19-inch rack,” said Bachar DCD attendees Webscale. “We wanted to achieve a cost reduction of 50% in common elements such as PDUs, energy and rack itself. We have already reached 65%.”

Bachar was on Facebook when designing Open Rack, so that you understand this system. He was also involved in the Facebook Open Compute switches, Sixpack and Wedge, and has launched the switch top-of-rack Pigeon since joining LinkedIn.

The rack is divided into cells, containing standard modules, so that the cabinet can be built and loaded in about one hour, instead of the six hours requires the installation of a conventional frame. Power is distributed to 12V via clip-on connectors, so no power cables. The data cables are also deleted. The individual modules are anchored with two or four screws.

Bachar argues that, although Open Rack is a great achievement, it is only really suitable for customers who buy a large number of servers and can afford to set their own standards. Open19 is aimed at operators and smaller companies, who need to combine the system with conventional racks, servers and buy conventional providers, not necessarily white boxes manufacturers said.

Bachar expected to emerge a new ecosystem around Open19 “. We are not big enough to do this for ourselves We want support from providers of servers, storage and components,” he said, claiming that Open19 gives these suppliers with an opportunity better than other options.

The servers are placed in rack cabinets, in “brick” modules, which can be single-height (1U) or double height. (2U). They can also be half the width of the rack, or the entire width. LinkedIn contacted all manufacturers of servers in the world and assured that their motherboard could be easily installed on the bricks for installation. “We have created a blade system that is not based on the chassis of a particular vendor,” he said. “We are not defining, only the form factor servers.”

Servers can cost 45% less than normal, because they do not need their own power supply. The Open19 rack also can have a drive installed battery backup, instead of a UPS for the entire data center.

Energy platform distributes power to 12V, she explained: “48V is not stable enough, and although 12V requires a higher current, the losses are marginal and negligible”

Network switches are installed similarly. Although adapting to switch LinkedIn own, you can also have standard switches from other vendors. Each server takes 50 Gbps data and 250W power.

The rack can have its own management system, he said: “We are exploring with VaporIO to install management in the rack itself.”

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