Invention Grant
- Patent Title: Storage apparatus having deduplication unit
- Patent Title (中): 具有重复数据删除单元的存储设备
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Application No.: US13000317Application Date: 2010-12-08
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Publication No.: US08463981B2Publication Date: 2013-06-11
- Inventor: Hajime Mori , Norihiko Kawakami , Hiroshi Hirayama , Katsumi Ouchi
- Applicant: Hajime Mori , Norihiko Kawakami , Hiroshi Hirayama , Katsumi Ouchi
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- International Application: PCT/JP2010/007135 WO 20101208
- International Announcement: WO2012/077162 WO 20120614
- Main IPC: G06F12/02
- IPC: G06F12/02
Abstract:
It is an object of the present invention to provide a storage apparatus that can suppress access performance degradation owing to processing of data deduplication. The storage apparatus according to the present invention acquires a sum of the access frequencies to each of redundantly allocated pieces of data, and performs the deduplication on the pieces of data having the sum of access frequencies less than a prescribed threshold.
Public/Granted literature
- US20120151169A1 STORAGE APPARATUS Public/Granted day:2012-06-14
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