发明名称 |
CONTROLLING METHODS OF STORAGE CONTROL DEVICE AND VIRTUAL VOLUMES |
摘要 |
The storage control device of this invention allocates the physical storage area in RAID groups to virtual volumes in units of chunks including multiple pages.;To the virtual volume 5, in accordance with write accesses from the host 20, the physical storage area in the pool is allocated. A RAID group 6 in the pool includes multiple chunks 7. Each chunk 7 includes multiple pages 8. To the virtual volume 5, the physical storage area is allocated in units of chunks 7. From the allocated chunks 7, the pages 8 required for writing write data are used. |
申请公布号 |
US2014331008(A1) |
申请公布日期 |
2014.11.06 |
申请号 |
US201414333643 |
申请日期 |
2014.07.17 |
申请人 |
HITACHI, LTD. |
发明人 |
Iwamitsu Koji;Ohira Yoshinori;Uchiumi Katsuhiro |
分类号 |
G06F3/06 |
主分类号 |
G06F3/06 |
代理机构 |
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代理人 |
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主权项 |
1. A storage system comprising:
a storage pool including a plurality of chunks provided with a plurality of storage devices, a controller adapted to: manage a plurality of pages in each of the plurality of chunks, provide a plurality of volumes to a computer, allocate a particular chunk in the storage pool to a first volume of the plurality of volumes, when a first write command from the computer to the first volume is received, write data of the first write command to a first page of the plurality of pages in the allocated particular chunk, and when a second write command from the computer to the first volume is received, write data of the second write command to a second page of the plurality of pages in the allocated particular chunk, the second page being selected in a serial manner after the first page is selected, wherein the plurality of pages in the allocated particular chunk are used in a serial manner to store data for the first volume. |
地址 |
Tokyo JP |