发明授权
- 专利标题: Storage system for eliminating duplicated data
- 专利标题(中): 用于消除重复数据的存储系统
-
申请号: US12663885申请日: 2009-09-18
-
公开(公告)号: US08285690B2公开(公告)日: 2012-10-09
- 发明人: Takaki Nakamura , Akira Yamamoto , Masaaki Iwasaki , Yohsuke Ishii , Nobumitsu Takaoka
- 申请人: Takaki Nakamura , Akira Yamamoto , Masaaki Iwasaki , Yohsuke Ishii , Nobumitsu Takaoka
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Mattingly & Malur, PC
- 国际申请: PCT/JP2009/004744 WO 20090918
- 国际公布: WO2011/033582 WO 20110324
- 主分类号: G06F12/00
- IPC分类号: G06F12/00 ; G06F17/30
摘要:
A storage system 103 carries out first and second de-duplication processes in response to receiving a write request from a client. First, a determination is made as to whether a write target data item overlaps with any of the stored data items of a part of a stored data item group, which is a user data item group stored in a storage device 209, and if so, the write target data item is prevented from being stored in the storage device. Second, a determination is made as to whether a target stored data item, which is not finished being evaluated as to whether it overlaps with the stored data item in the first de-duplication process, overlaps with another stored data item, and if so, the target stored data item or the same data item overlapping with the target stored data item is deleted from the storage device 209.
公开/授权文献
- US20110191305A1 STORAGE SYSTEM FOR ELIMINATING DUPLICATED DATA 公开/授权日:2011-08-04