公开(公告)号：US20140237202A1

公开(公告)日：2014-08-21

申请号：US14184128

申请日：2014-02-19

Applicant: Hitachi, Ltd.

Inventor： Junji YAMAMOTO ,  Hiroya MATSUBA ,  Katsuto SATO ,  Koichi TAKAYAMA

IPC: G06F3/06

CPC classification number: G06F3/0641 ,  G06F3/0608 ,  G06F3/061 ,  G06F3/0635 ,  G06F3/067

Abstract: There is provided an autonomous distributed type file system which is connected to a data reference device through a first network. The autonomous distributed type file system includes a plurality of storage device units which are mutually connected through a second network and are connected to the first network. Each of the storage device unit includes a local storage and a local controller. The local controller includes a storage directory and a duplicated data maintaining unit. The duplicated data maintaining unit refers to the storage directory, and continuously keeps same contents of duplicated data items in a range without running out of storage capacity of an own node. When there is no free space in the storage capacity, duplicate writing of the data with the same contents is prevented.

Abstract translation: 提供了通过第一网络连接到数据参考设备的自主分布型文件系统。 自主分布型文件系统包括通过第二网络相互连接并连接到第一网络的多个存储装置单元。 每个存储设备单元包括本地存储器和本地控制器。 本地控制器包括存储目录和复制的数据维护单元。 复制数据维持单元是指存储目录，并且在一个范围内连续保持重复数据项的相同内容，而不会超出自身节点的存储容量。 当存储容量没有可用空间时，可以防止重复写入具有相同内容的数据。