The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2012
Filed:
Jul. 22, 2009
Sang Min Lee, Daejeon, KR;
Hong Yeon Kim, Daejeon, KR;
Young Kyun Kim, Daejeon, KR;
Han Namgoong, Daejeon, KR;
Sang Min Lee, Daejeon, KR;
Hong Yeon Kim, Daejeon, KR;
Young Kyun Kim, Daejeon, KR;
Han Namgoong, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is a hot data management method based on hit counter, which prevents loads from being concentrated on a specific data server due to hot data by efficiently managing the hot data in the asymmetric storage system. Each of data servers of an asymmetric storage system checks hit counter for data stored in the corresponding data server to maintain hit counter information on the data in a latest state. The data server transmits the hit counter information to a metadata server at predetermined intervals. The data server makes or deletes a copy of the data according to the determination of the metadata server whether the data is hot data.