I recall hearing (maybe in a Level1Techs video?) that something akin to this can already be done with SAS. Each CPU in a dual-socket system gets its own HBA and each drive has two SAS connectors, so there's no performance hit for accessing a drive from the "wrong" CPU.
jeffbee
A Google search for this term returns this discussion and this article. What does it mean? The network controller is connected to multiple PCIe peers?