Electronics and Telecommunications Research Institute

Dong-Oh Kim

Ki-Young Kim

Hong-Yeon Kim

Young-Kyun Kim

Chei-Yol Kim

Jin-Tae Oh

Joon-Young Park

Young-Chang Kim

Young-Chul Kim

Disclosed herein are an apparatus and method for achieving distributed consensus based on decentralized Byzantine fault tolerance. The apparatus may include one or more processors and an execution memory for storing at least one program that is executed by the one or more processors, wherein the program is configured to receive delegate request messages, each including a first transaction for requesting distributed consensus proposed by a client, and determine congress candidate nodes forming a consensus quorum, to be consensus nodes based on the delegate request messages, generate a prepare message that includes a second transaction for obtaining consent to results of determination of the consensus nodes, and send the prepare message to the consensus nodes, and receive commit messages, each including an electronic signature of a corresponding consensus node, from the respective consensus nodes, and broadcast a reply message indicative of results of verification of the electronic signatures.

Apparatus and method for achieving distributed consensus based on decentralized byzantine fault tolerance

Disclosed herein is a distributed file system using a torus network. The distributed file system includes multiple servers. The location of a master server may be determined to shorten the latency of data input/output. The location of the master server may be determined such that the distance between the master server and a node farthest away from the master server, among nodes, is minimized. When the location of the master server is determined, the characteristics of the torus network and the features of a propagation transmission scheme may be taken into consideration.

Distributed file system using torus network and method for operating the same

The present invention relates to a file processing method using a data server included in a storage system, such as a Network File System (NFS) or a Distributed File System (DFS). When a file request is received from a client, a file corresponding to the request is loaded. Processing requested by the client is performed on the loaded file. A result file on which the processing has been performed is generated and transmitted to the client. Accordingly, the redundant resources of the data server can be sufficiently used, unnecessary data transmission can be reduced, and the resources of the storage system can be efficiently used.

Method of processing files in storage system and data server using the method

Growing community of inventors

Daejeon, South Korea

Dong-Oh Kim