LinkedIn: The Open19 power shelf is a combination of open standard form factor, connectors, external mechanical configuration, and management CPUs, combined with a proprietary smart e-fusing system and off-the-shelf power modules.
It is universal and can support most AC and DC configurations for a feed. It was designed with a standard power shelf input connector and a specific whip cable per input standard while the power modules can handle the AC and DC inputs. The shelf is generating 12v output—yes, 12v not 48v—and directly feeding the server motherboards.
For a 3+3 configuration, the power shelf can handle 9.6kw of total output power. For a 5+1 configuration, the shelf rating jumps to 15.5kw but loses the A/B feed redundancy.
All six module outputs are shared, so any module configuration is possible based on the user's needs and the level of redundancy they expect from the system. The power shelf has a per-server protection and monitoring function based on a dual Linux-based BMC module. It is multi-sourced with a limiting factor that a supplier-specific shelf will only take the power modules from that supplier.