发明申请
- 专利标题: Storage System
- 专利标题(中): 存储系统
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申请号: US12342918申请日: 2008-12-23
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公开(公告)号: US20090157862A1公开(公告)日: 2009-06-18
- 发明人: Junji OGAWA , Yusuke Nonaka
- 申请人: Junji OGAWA , Yusuke Nonaka
- 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
- 优先权: JP2004-298776 20041013
- 主分类号: G06F15/173
- IPC分类号: G06F15/173 ; G06F15/16 ; H04L9/00
摘要:
In a storage system that manages update prohibition (WORM) information, when time management is not performed with precision, there arises a possibility that an update prohibition (WORM) attribute may be erased before a preservation period expires. This invention provides a storage system coupled to at least one of time servers through a network, including: a first time information holding unit that holds first time information to be used to manage an update prohibition attribute of data; a second time information holding unit that holds second time information to be used to establish time synchronization with a device coupled to the network; and a time update unit that manages the first time information and the second time information, in which the time update unit receives third time information from the at least one of the time servers and judges whether the third time information satisfies a predetermined condition, and updates the first time information based on the third time information when the third time information satisfies the predetermined condition.
公开/授权文献
- US08122154B2 Storage system 公开/授权日:2012-02-21