发明授权
- 专利标题： Storage system including multiple storage apparatuses and pool virtualization method
- 专利标题（中）： 存储系统包括多个存储设备和池虚拟化方法
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申请号： US13639931申请日： 2012-07-20
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公开(公告)号： US09104590B2公开(公告)日： 2015-08-11
- 发明人: Ai Satoyama , Yoshiaki Eguchi
- 申请人： Ai Satoyama , Yoshiaki Eguchi
- 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： Foley & Lardner LLP
- 国际申请： PCT/JP2012/004615 WO 20120720
- 国际公布： WO2014/013527 WO 20140123
- 主分类号： G06F12/10
- IPC分类号： G06F12/10 ; G06F3/06
摘要：
A plurality of storage apparatuses including a first and second storage apparatus, wherein said first storage apparatus is configured to have a first virtual volume composed of a plurality of virtual segments, at least said second storage apparatus is configured to have a pool composed of a plurality of real pages, each storage apparatuses is configured to manage a virtual pool comprising one or more pools including at least said pool, said virtual pool is composed of a plurality of virtual pages, each virtual page corresponding to any real page, and said first storage apparatus is configured to receive a write command that specifies an address belonging to an unallocated virtual segment, allocate a free virtual page to said unallocated virtual segment, and write data to the real page corresponding to the allocated virtual page, even when said first storage apparatus does not have a pool composed of real pages.