Opening up the Baseboard Management Controller

In 2011 Facebook announced the Open Compute Project to form a community around open-source designs and specifications for data center hardware. Facebook shared its hardware specs, which resulted in 38 percent less energy consumption and 24 percent cost savings compared with its existing data centers. What Facebook and other hyperscalers (Google, Microsoft, et al.) donate to the Open Compute Project are their solutions to the agonizing problems that come with running data centers at scale. Since then, the project has expanded to all aspects of the open data center: baseboard management controllers (BMCs), network interface controllers (NICs), rack designs, power busbars, servers, storage, firmware, and security. This column focuses on the BMC. This is an introduction to a complicated topic; some sections just touch the surface, but the intention is to provide a full picture of the world of the open-source BMC ecosystem, starting with a brief overview of the BMC's role in a system, touching on security concerns around the BMC, and then diving into some of the projects that have developed in the open-source ecosystem. A good overview.