Embodiments of the application provide a node interconnection apparatus, a resource control node, and a server system. The node interconnection apparatus includes a computing node and a resource control node, and a device interconnection interface connecting the two. Each of the computing node and the resource control node comprises a processing unit and a memory, and the resource control node further comprises a resource interface for connecting with one or more storage devices. The resource control node manages storage resources of the storage devices, and when a storage resource is required by the computing node in performing a computing task, the resource control node allocates the storage resource in the storage devices for the computing node. The computing node can be powered off to save the energy, while the resource control node remains powered on, so that the access to the storage devices is not affected.