发明申请
- 专利标题： STORAGE SYSTEM, STORAGE APPARATUS, AND OPTIMIZATION METHOD OF STORAGE AREAS OF STORAGE SYSTEM
- 专利标题（中）： 存储系统，存储设备和存储系统存储区域优化方法
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申请号： US12664967申请日： 2009-10-15
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公开(公告)号： US20110191536A1公开(公告)日： 2011-08-04
- 发明人: Yoichi Mizuno , Yoshinori Ohira
- 申请人： Yoichi Mizuno , Yoshinori Ohira
- 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
- 国际申请： PCT/JP2009/005383 WO 20091015
- 主分类号： G06F12/16
- IPC分类号： G06F12/16
摘要：
This invention is intended for the purpose of providing the storage system, the storage apparatus, and the storage system by which, even if the storage areas allocated to the virtual volume are managed in management units set by the RAID group, overhead for parity calculation does not become excessive. This invention, by releasing a specific management unit not fully utilized for page allocation from allocation to the virtual volume and migrating the allocated pages belonging to this specific management unit to the other management unit, makes the storage areas of the specific management unit available for the write accesses for the other virtual volumes from the host computer.
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