Facebook has release the v1.0 Open Rack specification according to a blog post by Peter Bratach on its website. The new specification documents the evolution of the Open Rack over the last few months since the 0.5 version was published:
• Exclusive focus on a single column rack design.
• Higher inlet temperature of 35°C, which reflects other Open Compute designs and real-world data center temperatures.
• Network switches that can be deployed in various configurations, not just above the topmost power zone.
• Compute chassis are 1xOpenU – 10xOpenU high, and are supported on L-shaped brackets that directly snap into the vertical structural rack posts. These brackets, installable without tools, can be mounted at 0.5xOpenU (24mm) increments.
• Maximum height is dictated by the size of the power zone, but heights above the suggested maximum of 2100mm should be given closer scrutiny for stability.
• Innovative clips easily mate the chassis power connectors to the bus bars.