Open Rack

The Open Rack specification is an open standard for server racks designed to integrate with other parts of Facebook's Open Compute Project (OCP).

Open Rack is an open standard for server rack design in hyperscale data center environments. 

Open Rack differs from the traditional 19-inch rack width by featuring a 21-inch wide slot. Open Rack outlines specifications for single and triple rack designs.

According to the Open Rack charter, the following design elements are covered by Open Rack's specifications:

  • Physical design
  • Power distribution
  • Battery backup
  • Cable organization
  • Thermal design and server density
  • Service efficiency
  • Flexibility
  • Scalability

The OpenCompute.org website includes additional specifications includes additional information about optical interconnects, instructions for power distribution unit (PDU) assembly and tips for installing 21-inch server racks in colocated facilities.

See also:  Open Compute Project

This was first published in June 2013

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