Abstract: The inventive concept pertains to a computer-implemented method by which an application, an operating system, and hardware communicate with one another. The method entails the application converting an application-level virtual address to a physical address and communicating the physical address to the operating system. The operating system then uses the physical address to determine OS-level virtual address and complete the data transfer.

Abstract: A data storage system configured as node in a distributed data store is presented. The system comprises an RDMA-enabled network adapter and a role management unit. The RDMA-enabled network adapter is configured to communicate with one or more other data storage systems in the distributed data store. The role management unit is configured to: detect a node identification number associated with each of the other data storage systems, compare a node identification number assigned to the data storage system with each of the detected node identification numbers to generate comparison results, determine whether the data storage system is to perform either a server role or a client role with respect to each of the other data storage systems on the basis of the comparison results, and set up the network adapter to operate in both an RDMA server mode and an RDMA client mode during runtime according to the determined roles.

Abstract: The inventive concept pertains to a computer-implemented method by which an application, an operating system, and hardware communicate with one another. The method entails the application converting an application-level virtual address to a physical address and communicating the physical address to the operating system. The operating system then uses the physical address to determine OS-level virtual address and complete the data transfer.