公开(公告)号：US09031906B2

公开(公告)日：2015-05-12

申请号：US13684903

申请日：2012-11-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Soo-Young Kim

IPC: G06F17/30

CPC classification number: G06F17/30283 ,  G06F17/30091 ,  G06F17/30224

Abstract: Disclosed herein is a method of managing data in an asymmetric cluster file system. In this method, if an OPEN request for the opening of an absent file has been received, a metadata server assigns a file handle value and a file name and then generates a file in a data server. Thereafter, the metadata server copies a file stored in the data server or the generated file to one or more data servers based on a preset copying level. Thereafter, a client performs a file operation on the files stored in the data servers.

Abstract translation: 本文公开了一种管理非对称群集文件系统中的数据的方法。 在该方法中，如果接收到不存在文件的打开的OPEN请求，则元数据服务器分配文件句柄值和文件名，然后在数据服务器中生成文件。 此后，元数据服务器基于预设的复制级别将存储在数据服务器中的文件或生成的文件复制到一个或多个数据服务器。 此后，客户机对存储在数据服务器中的文件执行文件操作。

公开(公告)号：US09876874B2

公开(公告)日：2018-01-23

申请号：US14257289

申请日：2014-04-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Chei-Yol Kim ,  Sang-Min Lee ,  Jeong-Sook Park ,  Young-Chang Kim ,  Soo-Young Kim

IPC: H04L29/08

CPC classification number: H04L67/2852 ,  H04L67/1097

Abstract: Disclosed herein is a network selecting apparatus including: a determining unit checking an operation state of a cache server in which replicated data corresponding to a data request signal are stored and determining whether the cache server is normally operated, when the data request signal is received from a client; and a selecting unit selecting a first network so that the replicated data are transmitted to input and output devices when the cache server is normally operated and selecting a second network so that original data corresponding to the data request signal are transmitted from a storage server in which the original data are stored to the input and output devices when the cache server is not normally operated.

公开(公告)号：US09680954B2

公开(公告)日：2017-06-13

申请号：US14193736

申请日：2014-02-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jeong-Sook Park ,  Soo-Young Kim ,  Chei-Yol Kim ,  Young-Chang Kim ,  Sang-Min Lee ,  Hong-Yeon Kim ,  Young-Kyun Kim

IPC: H04L29/08

CPC classification number: H04L67/2842 ,  H04L67/1097 ,  H04L67/2847

Abstract: There are provided a system and method for providing a virtual desktop service using a cache server. A system for providing a virtual desktop service according to the invention includes a host server configured to provide a virtual desktop service to a client terminal using a virtual machine, a distributed file system configured to store data for the virtual machine, and a cache server that is provided for each host server group having at least one host server, and performs a read process or a write process of data using physically separate caches when the read process or write process of the data is requested from the virtual machine in the host server.