专利检索 ap:("NEC Laboratories America, Inc.") AND inv:"BIANCHINI, Ricardo" 第 1 页

1.

发明公开
DYNAMICALLY QUANTIFYING AND IMPROVING THE RELIABILITY OF DISTRIBUTED DATA STORAGE SYSTEMS 有权
标题翻译：动态量化和提高可靠性分布式数据存储系统

公开(公告)号：EP2272001A2

公开(公告)日：2011-01-12

申请号：EP09733416.3

申请日：2009-04-02

申请人： NEC Laboratories America, Inc.

发明人： BACHWANI, Rekha , GRYZ, Leszek , BIANCHINI, Ricardo , DUBNICKI, Cezary

IPC分类号： G06F17/00 , G06F9/06 , G06F15/00 , G06F13/00 , G06F11/30

CPC分类号： G06F11/1092 , G06F11/008 , G06F11/1096

摘要： Data is stored in a distributed data storage system comprising a plurality of disks. When a disk fails, system reliability is restored by executing a set of reconstructions according to a schedule. System reliability is characterized by a dynamic Normalcy Deviation Score. The schedule for executing the set of reconstructions is determined by a minimum intersection policy. A set of reconstructions is received and divided into a set of queues rank-ordered by redundancy level ranging from a lowest redundancy level to a highest redundancy level. For reconstructions in each queue, an intersection matrix is calculated. Diskscores for each disk are calculated. The schedule for the set of reconstructions is based at least in part on the intersection matrices, the Normal Deviation Scores, and the diskscores.